This jailbreak redsn0w WILL work for Original iPhone (1st Generation), Original iPod touch, iPod touch 2G and the iPhone 3G (not the iPhone 3GS).
the redsn0w link:
http://rapidshare.com/files/264987403/redsn0w-win_0.8.zip
How to jailbreak your IPhone OS 3.0 – WINDOWS USERS (redsn0w)
