Short_Rz

Howdy Is there any way to get a global variable such as %systemdrive% to work in the registry? I found that i couldnt install the catalysts or the nForce drivers with the normal method, however found that they still ran from the commandline once in windows. So i came to the conclusion that if i put keys in the RunOnce section of the registry, everything should install fine. However, i found that variables such as %systemdrive% dont work. I could just hard code the location of the installers in, but would rather have a variable there so i can install on different drives without hassles Is this possible??