Tried it. Every system restore failed. I got one to work, from where i 1st installed the OS. But it was soo unstable.
System restore for XP is a really bad leftover from Windows ME, and I've never seen it work properly. Backups are your only hope.
Some people I know however, have "cracked" copies of xp.
Still beats having to re-register XP every time you change something. By the time you really need a new service pack, you're probably due for a re-install, anyway.
Also have an OEM install of Win XP on my DELL Workstation dual Xeon machine and after I installed SP2 I lost contact with my router after 3-5 minutes after a reboot.
Actually, that's a typical problem with NT-class machines. NT4 at work did the same thing to me, and moving to Win2K didn't help, either. I think it has to do with the way Windows caches workgroups, and doesn't tolerate machines turning on and off randomly. If there's a way to force Windows to refresh the workgroup listing from within Explorer, I haven't found it yet (of course, I don't work there anymore, so I don't care, either).