Hey all, just a problem here thats rEALLY Pissing me off

At work in Firefox, it usually asks me for my Internet account username and password whenever i connect to the internet via a corporate firewall. But that computer isn't really mine and Firefox lags too much on it, so i deleted it.

But using IE6, when i open a internet webpage the corporate firewall tells me i'm using the wrong password (My password is changed fortnightly)
IE6 has only asked me once for my login and password the first time i connected using my computer and for some reason its decided not to ask me again for it. So its trying to login for me using my old username and password which is stored locally on the computer(which is stupid)... is there an option in internet settings that can allow me to clear my previous login information and use my new one? And is there a way so i can remove that stored password so people can't steal it?

help, anyone?

Your other thread was closed, and I'm closing this one as well. YOU NEED TO ASK WHOMEVER SET THE FIREWALL AND NETWORK UP.

WE WILL NOT help you bypass security measures