Install visio and project w/out uninstalling office 2007

Hello,

I just got MS Visio 2007 and MS Project 2007, but when I try to install them to my laptop (XP SP3) with Office Enterprise 2007, I get a message saying that I have to uninstall Office 2007 because those programs cannot be installed on a preliminar version. I checked and I don't have any beta version and it seems that I have to uninstall Office completely to install first Visio and Project, and the original Office disk is at my parents home, about 5 hours away...

Is there anyway I can install these programs without uninstalling Office 2007??

Thanks.