How to make wp show different content in sidebar based on page?

Hello friends.
I was wondering if there is any plugin or any hack to make a wordpress show different content in sidebar depending on the page. For example if I am on page A there is a description 1 on a sidebar. If I am on page B there is a description 2 on a sidebar.
If anybody knows, please tell.

Hi mister benny
http://wordpress.org/extend/plugins/widget-logic/ enables you to do such a task as you've outlined.
Understand - I've never used it, but I have it on a very good authority
that it will do what you want - based on your description

bon a petite!

Hali~!

PS; this may prove helpful as well http://codex.wordpress.org/Conditional_Tags allowing you control over "any widget," including which page and post, etc.,..

many ways to do this, u can even make different sidebars and call them based on the conditional tags, or within the side use a bunch of if / else statements as well

depends on how complex u want to be