I'm also currently trying to fool my brain into thinking I'm working on a Mac If it weren't for limited RAM (just 128 mb) and my old 15" monitor (which I think is dying...getting more blurry by the month) , I'd be trying a lot more than I have.
My current setup, using 1 all-in-one Utility:
EXPLORER.....er I mean FINDER :
Also, the application I end up using the most on the comp:
if you guys are wondering what this application is, go to www.flyakiteosx.com -- its just skinning of winXP -- low on resources -- must try software - recommended minimum RAM is 512MB - else PC lags like shit