Your system settings prohibit you from installing Office updates yourself

[Shrek]

I hope someone can help me out here because this is driving me nuts.

I was given an option to install Office 2003 from my company share or in a
standalone mode. I decided to install it from the share only to realize that
some policy prevents me to update office myself. I would like to update
Office 2003 to SP1 because sometimes Word hangs upon saving the file and I
hope that SP1 will fix this issue.

I uninstall Office 2003 and install it from a personal CD hoping that I will
get around the security policy. Alas, going to the Microsoft Office Update
gives me the following message:Your system settings prohibit you from
installing Office updates yourself.

Can someone tell me what on earth I can do to get around this security
policy so I can install SP1? What does the Microsoft Office Update checks? I
looked around the Security Policy template but I can't find anything Office
2003-related. I have admin access to my machine so hacking around is an
option.

Thanks.