T2 install problem

I recently decided to play a bit of t2 again, after about a year or so. And since I had absolutely no idea where I stashed my cd, I downloaded the install.
The problem is that it is trying to force me to install onto the C drive, which for me is for windows only, and its only got about 200 megs of space left. Has anyone encountered this before? Or might know a way to for it onto my D or F drive?

I probably should have put this in the tech forum, but oh well :\