If you have a problem and need some help then you have to provide some basic information. Saying
I'm really new and don't know what I'm doing so could you tell me how to change the background?'
'how do I put my own header image in?'
'something doesn't work, can you tell me how to fix it?'
1 - Start at the basics - disable all the plugins, remove any extra code you added and see if the issue is caused by something you added
2 - Make sure you have applied all the PATCH's that exist for your release
go to the 'New Versions & Updates' forum and look for the thread 'PATCH vvv-nn:..."
where vvv=the version number, nn=the sequential number of the fix - apply them ALL.
3 - LOOK THRU THE FORUMS! 80-90% of the questions anyone is going to ask have already been asked, and the answer is in the forums. So do your due dilligance and search and read the forums for the answer and to learn.
4 - LOOK THRU THE FAQs (http://forum.bytesforall.com/forumdisplay.php?f=38)
5 - LOOK THRU THE OPTIONS. There are lots of options so do some homework and read thru all the options so you will no what is available to you. There is nothing worst than someone who doesn't think they should look for an answer but wants one handed to them.
6 - Experiment a little. If you can't figure out how to do something, you will be surprised how easy it is to experiment.
7 - Disable all your plugins - since plug-ins are written by different people, using different coding standards, and there are thousands of plug-ins, inevitably there are going to be conflicts. Conflicts between plug-ins, conflicts between a plug-in and a theme, conflicts between plug-ins and WordPress (there are/were several plug-ins conflicts with WP 3.0 when it first came out. The plug-ins cause sites not to work at all). So disable your plug-ins and see it that resolves the issue.
8 - Learn some CSS - there are great references on the Internet to help. I am constantly going to http://www.w3schools.com/css to check on syntax and test things out.
9 - Provide the version number of Atahualpa and WP you are running - saying 'I'm using the latest version' is useless, what if a new vrsion came out earlier today or you only think you are using the latest version. Besides, six months from now that statement won't help someone else looking for an answer.
10 - Provide the URL! - if there is a problem on a particular page - name the page!!
11 - be descriptive - if you have a problem with a widget, don't say ' one of my widgets doesn't work' or 'I want to change the title of a widget to blue' - doing this may get you the code to change the wrong one. - Better to say, I have the PAGES widget in the inner right sidebar and I want to change the title to blue, what do I do?' (Of course you will never ask this question because you will have already searched the forums and found the answer already - I was just using this as an example)
12 - attach an export of your settings (ATO->Export/Import Settings)
13 - only ask one question per thread and don't ask a second question till the first is answered.
14 - if you are having problems with a widget/plugin - try it with another theme (twenty-eleven) - if you still have the issue, contact the plugin's author.
If you do all these things, you will learn and probably solve your own problem and get an answer much more quickly.