How to open control panel without going from start on bec i m in serious problem?

had upgraded with IE 8 & now i can see no icons task bar and no right click on desktop. the problem started after the installations of IE 8 completed and asked me to restart... after that i restarted and after the welcome screen it showed a error containg the message "please tell ur message to microsoft" and asked me to send error reports or not.....this problem was arriesd due to IE8 as it error related to it.......NOW plz tell me how to restore my computer again and getting all my icons back...im running programs using task manager.... i wanna to unstallal IE8...my window is xp .... please guide me