that is interesting, i hate the way Ms Windows is getting attack by a simple virus like autorun.inf and that's why i don't want it again.With your current hardware and memory, you really need to look at something like these OSs:
The alternative is to beg, steal or borrow somebody's old Windows machine which has become surplus to requirements and which has more memory and a Pentium P4 (or more recent CPU).
There should be plenty of such PCs and laptops generally available after the splurge on brand new machinery at Christmas. Just ask around.
Alternatively add more memory to your PC, if possible.