I got both Vista business and ultimate from my bro company to try out...hmm both DVD are not bootable on my SATA DVDRW?..

So I tried to run the setup in my xp sp2, problem is my C partition is 10gb and free space is only 4g, upgrade option is disable, Custom install wont let me proceed coz space needed is about 7gb... wth...

How am I suppose to install Vista then ? Boot from Vista disc also cannot, upgrade oso cannot .........