lol true, well as long as you don't do windows update you're safe... no wait, that's contradicting... bah just get a router.
For a company that makes patches for patches I trust a router before the patches anyway. to be honest I never did windows update once on my win2k, and never had problems. There's other ways to keep things secure but you just have to know what you're doing. But the worse you can do is get a cracked copy or otherwise modified since some crackers wont only crack it, but they will insert things in it.
Might as well just buy it and that way you're safe, and you can do windows update.