How can I set a different product and file version for VC6 or VS.NET builds?
 

Create two Make VC6 or Make VS.NET steps for the project/solution, the first one with Don't build checked and setting the product version, and the second (with Don't build unchecked) setting the file version.

These steps can also be placed in a project or global subroutine and called for each project/solution that is being built, passing in the filename and version values in temporary macros.