We have tested our latest version of EAW on Win XP, Vista, 7 and 8, and it seems to run quite well on most machines. Some OS / Graphics card / Drivers, combo do cause problems, but we can get most people running with a bit of tweaking.
The trick is, copy your CD to your HD, and patch it, you might be lucky first time, if not please post your system specs, and we'll help you get going.