Anyone know how to get Antares Mic Modeler DX v1.32 up and running with Sonar X2 Studio on my  Win 7 system?  I see that this is now discontinued software, but I really like the vocal sound I got on my old Win XP / Pro Audio 9 system.  When I try to install it on my new system, I get an error message saying "insufficient user privileges for low level device driver", and Sonar does not see the plugin.  Any help appreciated.

Try right-clicking on the executable and select "Run as administrator".
 
This is assuming that you're running Win7 32 - there's no direct way to get 32bit DX's running on a 64bit OS - some can be loaded a VST "wrapper" while others will not run at all.   Unfortunately a few of the older Cake DXs fall into that category...