NO!!
As long as you don't set anything in the raid bios, it will detect the drives normally, and the mobo will use the raid ide ports as normal ata100 ports.
I also have a KT7-raid and a KG7-raid, kt7 has raid setup, the KG7 not yet.
Didn't have to do anything to make it recognize my hd's on the raid ports.
Ultima