Silent Installation?

I just licensed for Flash Player/Shockwave, and I want to remotely install latest Flash version to about 50 remote pcs (xp pro, sp2 machines). I have MS Sever 2003 Standard SP2 DC with AD. I know I can push the .msi through Group Policy, but the clients have GP restrictions that will not allow them to install aps. I really don't want to log-on to all 50 pcs as administrator just to run the install.

Is there a way to install silently with a script? If not, what is the easiest way to remotely install without elevating user priveleges?

Thanks.