I've been experimenting.
Installing stand-alone versions of vanilla AutoCAD on the latest versions of Windows_7 (the retail versions will be the same) running in Sun VirtualBox on an earlier pre-release version of 64-bit Windows_7.
No great amount of testing done - just "will it install?", "will it run?" and a little drawing.
I think it can be assumed that LT versions and verticals will behave the same as the full versions.
(*1) alert message says there are known compatibility problems. The only "fix" suggested is to buy a later version of AutoCAD - ignore this and click the "run software" button. Obviously, this involves a risk.Code:Win version.............Acad version Win7-7600-x86...........A2007(32).....A2008(32).....A2009(32+64) Install.................yes...........yes (*2)......yes (32) Run.....................no............yes...........yes (32) Run despite.............yes (*1)......n/a...........n/a "known compatibilty problems" Win7-7600-x64 Install.................yes (to x86)..no............yes (64) Run.....................no............no............yes (64) Run despite.............no............no............n/a "known compatibilty problems" Run as administrator....no............no............n/a
(*2) you may see a message that Explorer is running and needs to be closed even though Explorer is NOT running - click the "ignore" button.