AVG Antivirus in outlook

I had avg antivirus scanning my email a while ago. I uninstalled it because
the free trial had expired and now I can't get rid of it (it's annoying.) I
tried resetting everything in outlook and still have it. I even went as far
as putting the office cd in and removing and then putting back outlook. Did
nothing. When I sign in to Outlook, I get a box that says: "AVG Kernel Error"
and under that, it says: No interface. Is there any way I can get rid of this
****in' program from Outlook.

Any help would be appreciated.

Thanks

Steve