I got the latest version Atahualpa-3.4.2 with WP-2.8.2, I just want to know, how to hide or make invisible a Text-Widget in sidebar in Atahualpa-3.4.2 theme

No reply so far: I feel this ain't a simple workaround, at least for me I'm not a coder! will any help available?

Try the Widget Context plugin -- it lets you show widgets on some pages but not others.

You can do this with a CSS insert

div#id-of-widget {
display: none;
}

or

div.class-of-widget {
display: none;
}

Flynn, Thanks a lot.. that code just worked like a CHARM