Solved the problem with not having any event sounds in Windows XP and thinking that the Registry entry under [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32] was empty. Apparently, the virus I had changed the permissions in the registry. I right-mouse clicked on the registry entry, and removed all the restrictions to the permissions. Even though I was the only user and the Owner and Administrator, there were restrictions. After removing them, then re-booting, all event sounds came back.
Edited by aka KP, 16 May 2009 - 07:04 PM.