My own experience
15 GB Ubuntu
15 GB XP
120 GB Data
I just use XP for Sony Vegas, So I think of getting VMware and run XP on Ubuntu, but for games thing you have to purely run XP on machine no VMwares, I'm not into PC gaming & movies just one or two movies but I've a lot of Songs and video clips so VMware wouldn't effect performance, but guess what? give it a try, try to install VMware and see what happens, nothing to lose
