I am going to be acquiring a Dell Optiplex GX260 soon, but I cannot decide which operating system I should go for. The computer has a 2.0 Ghz Pentium 4 and 256MB of RAM (going to upgrade that right away). I am only going to use it for basic things, such as Office stuff and watching Netflix Instant videos. I do not want to invest too much into it, because I'd rather spend money on Mac stuff

. It looks like I can get XP cheaper. I have Vista Home Prem on my MacBook Pro and I haven't had a ton of issues, so I don't really have a preference either way. I know this is a Mac forum, but I thought you guys would be able to lead me in the right direction.