i have tryed to install it 3 times now and it always stops at 88% the disc is brand new out box no scratchs or dirty at all plz help me fix this problem I am also the adminastrator of the computer my dxdiag file is to big to attach computer specs windows xp quad core processor 2046mb ram 640gb hd direct x 9 nvidea geforce 8400 GS xfi soundcard ive played wow and plenty of other games that should make my comp run hard so sc2 should not b a problem im clueless whats going on plz help me