If vanilla acad is anything like the acad arch install, the MSI has been set to reject installation of 2008 on 64bit OS. The work around is to copy the contents of the DVD onto a machine and edit the MSI file. If you do a search under the autocad architecture forum you will find more detailed instructions. 2009 was the first true 64bit version released if my memory serves me right.
autocad 2008 64 bit crack keygen
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