Corporate Symantic is being blocked...can't download Norton 2011

Good evening.

 

I'm in the U.K. and my Symantic program on our home computer is being blocked. It can't scan and it is impossible to switch it over from disabled.

 

I tried downloading Norton 2011 to get the computer cleared but it can't be downloaded whilst a Corporate program is in place. How do I clear the Symantic program so that it will do its job...or is it safe to simply erase it and then install the Norton 2011?

 

Its 9:00 p.m. here and my computer is a mess...no emails, no security...is there anything that can be done???