I did some looking, and
here is one.
I loved XP, and was skeptical of Windows 7, but after using it, I'm a pretty big fan. The only things I didnt love were the programs that HP installed(damn bloatware) but those were easy to kick to the curb. It runs quick, is very slick to use, and I haven't had a single issue in the last 5 months. Good enough for me. I think as far as a GUI goes, it is superior to XP, and the functionality is there as well. If it's free(which it should be) gofer it. If you have to pay, well, XP is tried and true. But I wouldnt hesitate to pull the trigger on Windows 7.