Switch from 32 to 64

I am aware of the cavets for hardware and software when switching from 32 to 64 bit, but the question is this. I just bought the 3 unit upgrade which contains both the 32 and the 64 bit discs. I have an AMD dual core that will process the 64 bit. I installed the 32 bit version. Now I wonder, can I go back and install the 64 bit and if I do will I lose the extra install or will I still have 2 left on the 64 and the 32?

Thanks.
JIM

A reinstall on the same PC will not use up an additional license. I don't think there is really any difference in the 32-Bit vs 64-Bit as far as licensing. You can change Bit versions with the same license.

I'm not positive. I would like to think even after installed to 3 PC's, one could switch computers with the license.

Thanks Clifford. Sounds like what I wanted to hear. Jim