File - Properties - Video tab is the pre-rendered files location.
File - Properties - Audio tab is the recorded files folder (audio).
Options - Preferences - General tab is the temporary files location.

Thank you. See any issues with the way my drives are set up?
Is there any part of Vegas that automatically sets itself up on the
C: drive? I don't want anything there. It was installed on the E: drive but most preferences were initally located on the C: drive (I'm sure by default) until I changed them. I just want to make sure I didn't miss anything. Thanks again for your help.

Michael,
Just out of curiosity, why don't you want Vegas on the C: drive? That is where MS Windows is looking for programs to be located. Windows will look for files anywhere, but AFAIK, prefers programs to be nested in the C:\Programs folder.

I'm aware of the throughput advantage of not placing avi or mpeg files on the C: drive, put have never heard of any advantage to placing program files on a separate drive. Is there an advantage?

Unfortunately my computers were put together prior to my getting
into video otherwise my set up would be different. It's not a separate drive, it's partitioned. This is how I orignally set it up,
one for the os and programs, the other partition for music files. I put Vegas on the E: partition because the C: partition is getting low on space. The whole thing needs reconfigured really
but in the meantime I'm trying to spot problem areas. I have a lot
of equipment on that computer and want to use it as my primary editing piece. I see no advantage.