Regarding the Win2k CD: No you have no permission to give away copies of the installation media. In any case, you'd have to check whether the receiver has a license first and that's something you cannot do. If you so certain about your words, then share the Win2k on Gnutella or put in on your web server. Only people with a key will be able to use it, right?

I'll give you a hint: The key is only half-baken technical protection because many people do not care about copyrights and copyrights only work in the court not in the wild.

There are also different license models and Windows versions. For example, if you have a OEM version, you have no permission to use the server version etc. Your offer is highly questionable in any case - even when you ignore the copyright issues. At least, I don't install operating systems
- or any software whatsoever - offered by anonymous random people at a web forum.