do you know that people aren't always made of money?
windows 7 might not cut it. i don't know unless we see some specs (install speccy).
what i'd recommend is a clean install of XP, and only installing essential programs (firefox
since chrome doesn't support XP, thunderbird possibly for email, small antivirus like avast
or AVG ((or no antivirus at all)), etc. etc.), backing up important/personal files before you do
so to a USB drive or CD or whatever.
if that doesn't sound good, you might be sol, since that's all i can think of with such a
low-spec PC according to your details