Checkout what I found from another site. Can any moderators go through this and see if Vegas would benefit from most/all/some of these. I'll be doing a check myself tomorrow. Later.
I have been using XP for several months now. I have had not one problem. The registration is not a problem even after several reinstalls to see what happens.
Interesting. One thing I think is in error though (and I wrote the author) is ConservativeSwapfileUsage is, I think, a Win98-only feature. In fact, my system.ini file says right at the top it's only there for old 16-bit app support.