I'm probably going to switch to 64-bit X-fer. My data sheets (HP/intel) seem to say that you need a 64-bit processor, 64 bit enabled BIOS, and a 64-bit enabled Chipset. In my case, that means at least a new mobo. I'm wondering if the people getting the 64-bit OS are actually getting 64-bit X-fer. If you are sure that you're getting 64-bit x-fer, please tell me what your running it on. DRB