You would just be wasting hard drive space using 64-bit on that machine. Netbooks by design are not meant for heavy computing. Basically a browser and possibly office productivity software like a word processor or spreadsheet. Netbooks aren't really meant to be future proofed, since they are cheap and are sold for a specific purpose, portable net access. By the time that one is useless your next netbook will prob come with 64-bit software.