Hey guys, I've just gone from win xp 32 bit to win 7 64 bit via custom install, i'm guessing from what i've read that that's a clean install. After finishing my installation, i realised that my HDD is still filled up with programs from my win xp 32bit and i can still run them, also there's the windows.old stuff. Must I uninstall these programs or can i just delete them, I'm not sure because they can still run. I'm also now confused about which folders are new and which are old. Any advice is greatly appreciated.