I've tried it on 2 different PCs and it didn't work on either (at first)
Desktop
A Trigger's Brush
ASUS P4S800
Intel 2.8MHz CPU
XP Pro SP2 (kosher)
Laptop
Toshiba A100 Satellite Pro
Intel Dual Core 2x 1.73Mhz CPU
XP MCE2003 (kosher)
Both downloaded versions froze during install
Desktop allowed wind-back and worked OK. Laptop allowed wind-back, but would not boot afterwards
Got a CD from a mate who said it worked for him - same problems
Bought CD from MS - only £7.33 in UK - same problems
Decided to remaster both systems
Laptop
Reinstalled XP MCE 2003 SP2 from scratch, then SP3 - no problems
desktop
Reinstalled XP Pro SP2 from scratch, couldn't install raid array card during install, installed XP Pro SP0, then raid array, then SP2 (from CD), then SP3, and no problems
Both systems have
Software: Free Your Audio, Find Album Cover Art, and Freeware | MuvEnum Software installed as an address bar.