Why don't you just get Windows Vista instead of using a fairly subpar Windows theme or tools to emulate (well at least Christo's looks drat terrible compared to the real thing), it's not that bad of an OS ever since SP1 came out, and it's definitely leaps and bounds ahead of where Windows XP was in SP1, imho?
Christo, StyleXP sucks. Use Windowblinds, at least it has transparency man. As much as I hate it, it's the best program for what you want to do.