Don't work like that. Even if you have DX9c, DX10 will still be there. Had that prob to like 2 months ago or whatever when i installed Vista. Installing DX9c will only make SH4 work! nothing else. And even if DX10 would be deinstalled WHITCH IT WILL NOT! there are no games out there supporting it at the mo...NONE!
Thats what I am running...see! DX10 is still there, but i am running SH4 just fine
