auto update as local admin

I installed Comodo Firewall Pro as a domain user with local admin rights on Win XP Pro SP 2. Everything is working fine but the auto update function. I am connected to the internet via a company LAN and mobile broadband respectively.

I have never gotten any messages about available updates. When I click on the update button I just get the message that I need to be logged in as a Administrator. I have local admin rights and was able to install Comodo Firewall as this user. Is there any way to also run the updater?

Thanks in advance!