Why not just do something like I do?

vnc over ssh
http://www.realvnc.com/documentation.html

of course... you'll have to be able to install vnc so hopefully you have local admin priv.

web filers can be a huge pain in the ass. it sucks when you have to call the "web filtering" admin and wait 5 days to determine if you can indeed go to the antivirus site that the filter blocked because of a false positive. (eg. had "hacker" in the meta fields)

You'd think they wouldn't block other admins... at least... you'd think that.