I guess many people are customizing their XP setups to look like Vista and one thing you might not have thought of........is the sound scheme. It's pretty easy to do - Just go into the control panel - Sounds and audio - Sounds Tab - and go through the list and highlight each sound individually and change the sound from the media folder that pops up. Obviously you need to put the sounds in there first and if you want the Vista sounds go here and download it.........
http://rapidshare.com/files/14250508/VistaSounds.zip.html
The quality of the .wav sounds are excellent........