After I installed new catalyst drivers, my milkshape just crashes when I dubbleclick on the icon... Is there anyway to solve it than reinstall it?

go to their website. go to their downlaods section. on the top fo the page should be a link to some drivers called "mesa" or something (just look for alternate drivers). These will get it working, but you'll cuss the day you installed the detonater drivers cause it gives you a batch of problems while running milkshape.