If your setup fails to run on 64 bit Windows with a message that says the setup is incompatible, it is because the product you are installing is very old, probably from 2003 or earlier.  Microsoft changed the requirements for setups on 64 bit Windows and very old setups just won't work.  You can check with us to see if there is an updated setup or you might upgrade to the current version of the product, else you may need to continue on with 32 bit Windows. Another option is to run a 32 bit emulator on your 64 bit Windows (not sure, we have not tried).  If you can, continue on with the 32 bit Windows computer you have been using and try to transition to a more recent version of the product.