Hope someone can anwser me this question. I have a user that is using Yahoo Instant Messanger, and i do not what her to use that program. She is setup as a local admin so just removing the program will do no good because she can download and install it again. I have a Sonic Wall and I have blocked all port coming from her IP address for all chat, file sharing, and gaming site. From what i found Yahoo goes over port 80 and if i block port 80, no more internet and i do need her to have access to the web. Anyone have any suggestions?

Thanks

-R