I've moved your post to the Antivirus topic folder.
To view the location of the infected file, open OneCare, click change settings, logging tab, create support log. A report will open in your browser. Scroll down t the Virus and Spyware section.
If the scan resulted in a message, quarantine failed, eee this post for information about Quarantine Failed - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=1548384&SiteID=2
If OneCare did not detect or cannot remove the malware, please contact support to report this and for help with removal.
How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2
-steve