Two things to try / make sure. One, do you have an account on the computer in question? If not you need one, and make sure that you are able to share the printer through the username / password you've selected (in other words you have the right amount access to be able to share the printer). Two, perhpas use the full name (i.e. IP address) of the computer with the printer? Again, I was connecting to a computer using Windows 2000... perhaps the reason it worked is because of that? I really don't know... you might want to check out the (rather lengthy) discussion in the forum listing I mentioned earlier... perhaps there is something in there that might be helpful. Sorry I could't be of more help!
Chris
Chris