Is it possible I can switch from Vista OEMx64 bit to Vista RETAIL x86bit?

I Installed Windows OEM Vista x64 bit, but its giving me problems,some of my drivers is not working, so i brought the RETAILVista x86bit version, but when I deleted and format the DRIVES that haves the Vista(running RAID 0), and when i put in the 32bit CD i get a blue screen, but when i put the x64 bit CD back in no problems, it will install normally again. Is there a way i can TOTALLY get rid of the vista x64 bit partition, and install the retail x86(32)bit version?