In Windows XP I have installed the latest build of AVG antivirus 7.5. It has also added the AVG icon and the text "Viruses" as an option to the "Search" button on Start menu. I don't like this clutter and want search to revert to displaying only the "Files and folders" option.

This article describes how to remove the Viruses entry from the Start menu Search options.
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ FindExtensions \ Static \ Avg7Find
Note: The above steps were written for AVG antivirus version 7.5. The subkey name (Avg7Find) may vary depending upon the version of AVG antivirus you've installed.