You're still gonna get busted. You maybe quick to change the site you're visiting but if the company has a firewall, gateway or ISA server than you're screwed. Simple.

Even Admin and I couldnt get past the ISA server while using local computer addresses. Luckily i was the one that monitors the web usage. In the long run I wrote a program that would execute every night and strip all the data pertaining to me and Paul before the log reports were wrote and our boss saw them.