I recently purchased an additional 4 gig of RAM and installed it, only to learn, to my embarrassment, that my 32 bit Win 7 has a maximum 4 gig capability. I'm thinking about reinstalling Win 7 in 64 bit mode and am wondering whether its worth it. Basically, I just want to use the new RAM. The 32 bit OS seems to be running OK as it is, but will I gain anything by going through the upgrade process to 64 bit? I understand that I will have to remove the 32 bit version before installing the 64 bit. Any suggestions as how to proceed?