Just save all of your data on other media. All of your programs that previously ran on the 32 bit version should run on 64 bit OS. It will create a separate programs folder for those. You didn't mention what programs you may have already installed but can always go to the Windows 7 adviser site (use google) just to check. Also, if you have peripherals such as printers, scanners and such, you'll need to check manufacturer's web sites for 64 bit drivers.
Hi all, I recently pruchased a new laptop Toshiba Satelite L500, with a Pentuim Dual-Core T4500 2.3GHz + 4GB ram (2.96 usable)& Windows 7. I was given the option to instal as 32bit or 64. to be safe I ran 32 not knowing that it could not use the full 4G of memory installed. My questions.. I now want to go 64 bit. Do I need a clean re-install & will my programs that run on 32bit work on 64?