I really do not want anything to do with Vista. (OK, I got that out of my system) (I was going to try and load XP PRO on my latest acquisition, a laptop, and not worry about it. After a week or more of scouring the internet for the drivers, I finally gave up when I couldn't get the sATA drivers for the hard drive and returned the HP dv7-1247cl.) Instead, we went with the more powerful laptop (HP dv7-1260us). It came preloaded with Vista Entertainment or something like that. I have Vista Ultimate. I was going to just Upgrade to Vista Ultimate. I can not. I get the message saying the UPGRADE is not available since it is a 64-bit PC and I have the 32-bit version of Vista Ultimate. Can I just go ahead and reformat the hard drive and load the 32-bit version of Vista Ultimate that I have? Are there any considerations to look out for? Are there software compatability issue? Do I Need to give Microsoft more money for a 64-bit version of Vista Ultimate? What are my options?