The question has already been posed in the thread "ACAD2010 or ACA 2010" regarding vanilla AutoCAD being launched from the ACA 2010 desktop icon but I've managed to take it one step further. The solution given for this problem was to launch the program from the Start menu instead of the desktop icon. This worked for me a couple of times but now all I get is plain old AutoCAD.

I've tried creating new desktop icons from the acad.exe file but it doesn't change anything. Has anyone come up with a permanent solution to this?

The program is deployed from the network installation for 64 bit Vista Ultimate.