Survey 2009 / Autocad 2009 64 bit/ Vista 64 bit

Is anyone running this same configuration? I get Autocad installed fine. When I try to install Carlson, it prompts for which version of Autocad you are installing to, I select 2009 and it says it can't locate it. I tried a repair install and a reinstall on Autocad and it still will not work. Any suggestions?
Thanks.
Thanks.