sadaqat,
Be more secific;
Do you get an error message?
If so please post it. This is the only way for someone to help you.
If you have the pre-release to the current SP1 update. You will need to
uninstall One Note / reinstall / then update to the relesed version of SP1.
Chris Schatte
use the Office Online web based newsreader here:
http://www.microsoft.com/office/community/en-us/default.mspx
In Office System 2003 applications:
Help/Assistance Pane/open Communities