Do not, yet , worry about 64 bit for photo packages. 32 bit programmes work perfectly well and are in C:/Programme Files (x86) folder. I have an expensive Photoshop CS5 which loads as both 32 and 64 bit. I mostly use the 32 bit version as there are no TWAIN scanner drivers for 64 bit for my hard and software. As to free processors, Paint is built in to W7 but there are many, including Picassa and no doubt other people will reccomend others.