This represents an easy way to add header images to MultiSite or WP Multi Network installations of WordPress for each site.
In five easy steps…

Download the Zip File, Unzip, Upload the Three Files to Your Server, Create the New Directories, and Upload Your Header Images.

1. Download the Zip File

CLICK HERE

Username: atahualpa
Password: custom

2. Unzip

Gee, you already know how to do that!

3. Upload the Three Files to Your Server

Atahualpa 3.6.1

If you are using Atahualpa 3.6.1 you can just copy the files to your server with your favorite FTP program. Just replace the files that are there in these two directories.

themes/atahualpa
functions.php

themes/atahualpa/functions
bfa_rotating_header_images.php
bfa_custom_site_dir.php

Atahualpa Other (manual)

If you are not on 3.6.1 upgrade to 3.6.1 first! OR...
Follow the manual upload instructions HERE…

4. Create the New Directories

Using FTP, you will need to create a new header directory for each of your sites.

You need this directory structure...

wp-content/blogs.dir/example.com/images/header

Replace example.com with your domain name, without the www.

5. Upload Your Header Images

Using your FTP Program Upload Your Header Images to the header directory you just created.

You Are Finished!

Just give it a try!

Click Here for More Detailed Instructions.

You could just add the rest of the directions here instead of making users travel to another location. That would be much more helpful and supportive.

@juggledad
Oh, ok.

These are the directions for...
Other than Atahualpa version 3.6.1

1. Download the zip file.

Same As Above…

2. Unzip

Same As Above…

3. Upload ONE File to Your Server

See instructions above for downloading, however upload only ONE file into this directory:

themes/atahualpa/functions
bfa_custom_site_dir.php

4. Modify

themes/atahualpa/functions
bfa_rotating_header_images.php

Replace This:

PHP Code:

$imgpath = TEMPLATEPATH . '/images/header/';
$imgdir = $templateURI . '/images/header/'; 


With This:

PHP Code:

if ( is_dir( BFA_CUSTOM_DIR . '/images/header/' ) ) {
    $imgpath = BFA_CUSTOM_DIR . '/images/header/' ;
    $imgdir = BFA_CUSTOM_URL . '/images/header/' ;
} else {
    $imgpath = TEMPLATEPATH . '/images/header/' ;
    $imgdir = $templateURI . '/images/header/' ;
} 


5. Modify

themes/atahualpa
functions.php

Replace This:

PHP Code:

include_once (TEMPLATEPATH . '/functions/bfa_header_config.php'); 


With This:

PHP Code:

include_once (TEMPLATEPATH . '/functions/bfa_custom_site_dir.php');
include_once (TEMPLATEPATH . '/functions/bfa_header_config.php'); 


Note: Actually this just adds the first line before the second, which already exists.

6. Create the New Directories

Same As Above…

7. Upload Your Header Images

Same As Above…

You Are Finished!

Just give it a try!

Directory Structure Details for Less Experienced Users.

You will need a new header directory for each of your sites.
Use your FTP program and start with your wp-content directory.

You need this directory structure for each site.
wp-content/blogs.dir/example.com/images/header

Replace example.com with your domain name. See Examples Below.

That Means:

Using your FTP Program:

1. In the wp-content directory create a directory that is blogs.dir (if it doesn’t already exist).
2. In the blogs.dir directory create a directory that is your domain name.

To find your domain name, look at the address bar.
Mine says: http://alantait.net/
The domain name is between the two slashes // and the very next slash /
DO NOT include any www. if you are using that.
So http://www.blog.example.com/ would be a directory called blog.example.com

3. In your domain name directory create a directory that is images.
4. In the images directory create a directory that is header.

This structure mimics the structure in the Atahualpa theme directory.

EXAMPLES:
These Examples are for single sites, multisite subdomains, and WP Multi Network sites.

http://acts-29.net/
http://www.acts-29.net/
wp-content/blogs.dir/acts-29.net/images/header

http://franciskong.acts-29.net/
http://www.franciskong.acts-29.net/
wp-content/blogs.dir/franciskong.acts-29.net/images/header

http://filipina.fil.net/blog/
http://www.filipina.fil.net/blog/
wp-content/blogs.dir/filipina.fil.net/images/header

SPECIAL INSTRUCTIONS FOR
MultiSite Sub-Directory Users

Warning: Do Not use these instructions for a single site, a multisite subdomain, or a WP Multi Network site.

When you use multisite in sub-directory mode, there is no unique domain name, so the directory structure changes slightly... this is ONLY for sub-DIRECTORY mode, if you set that up at the very start of your WordPress install.

Here is how sub-directory sites would look...

http://www.example.com/peter/
http://www.example.com/paul/
http://www.example.com/mary/

The instructions are the same, except you need to add a dash (-) Plus the sub-directory.
wp-content/blogs.dir/example.com-directory/images/header

Where:
example.com = Your Domain Name (no www.)
directory = Your Sub-Directory

EXAMPLES

http://example.com/peter/
http://www.example.com/peter/
wp-content/blogs.dir/example.com-peter/images/header

http://example.com/paul/
http://www.example.com/paul/
wp-content/blogs.dir/example.com-paul/images/header

http://example.com/mary/
http://www.example.com/mary/
wp-content/blogs.dir/example.com-mary/images/header

Question, why the empty image directory?

The empty image directory mirrors the theme file structure. However, this directory is a convenient place to put things like logo files on a per site basis.

Likewise we will be looking at additional site customization issues regarding theme updates, multisite, and WP Multi Network sites and will be using this for storage of unique files in this regard.

For example, a custom site may need logo files, icon files, footer or sidebar image files, and header files. This gives a place that will not be overwritten with each theme update and would allow the use of automatic updates without loss.