can l replace the win7 7000 x32 with win7 7048 x64 ON a dual boot with winxp x32, or i must delete the win7 x32 first? (it's a core2 e4600 with 2g memory) thanks.
Just copy your sensible data to other disk, then wipe the 7000 x32 disk with the built-in format function from the 7048 installer. The 7048 will then install on the disc and replace the 7000 x32 in the boot-loader.