Since u have a licence and everything then ims ure they may do this one thing, open ur install cd if u have one(or the folder the installer is in) and right click on the steup.exe file, then select "Run As" then just ask if one of them will type in the administrator password so u can install it and then just run the setup as normal...
If they still wont do it then PM me and we will talk some ways over
If they still wont do it then PM me and we will talk some ways over