MR816csx software wont work with my operating system

When installing the MR816csx DSP unit software new,MR exe file from the install disk, the prompt states that “this operatiing system is not adequate for running TOOLS for MR” in a big red X, now Im just plain frustrated,I use win7 in 64 bit. COuld someone shed some light here, I am totally stopped unitll I get rid of the dialog box stating that ,When installing the MR exe file from the install disk, the prompt states that “this operatiing system is not adequate for running TOOLS for MR” in a big red X, now Im just plain frustrated,I use win7 in 64 bit

Craig B