VSS requires - at least - the Services called Volume Shadow Copy & SWPRV. I have the same problems form time to time. And yes, running WR on a XP system does "break" VSS.
I re-registered SWPRV.DLL and it did not help. I'm thinking about reinstalling XP, but I know I'll never get it tweaked the way I have it now.
I stupidly deleted my backups before this happened, so I guess that's about my only choice.
I'm going to download autostreamer and try to integrate SP3 into the installation DVD, but I've never used it so I'm not sure I can do it.
Thanks a lot for your reply Willy2.