1. Download and install Orca from Microsoft.
2. Copy the installation files to your hard drive or a network folder.
3. Backup the files ACA.msi and Setup.ini
4. Edit the ACA.msi with Orca and delete the action found in the table
"InstallExecuteSequence" that is called "CheckFor64BitOS" Delete the same
line under table "CustomAction"
5. Save and close the ACA.msi
6. Edit the Setup.ini with Notepad. Delete the line under
"#==================== Platform Requirement" that is labeled
"PLATFORM=NO_WOW_64_PROCESS"
7. Double-click the Setup.exe and you should be able to install without any
problems.
8. Some support paths under the "Files" tab of the configuration dialog box
have incorrect paths. The installer adds and extra "\AppData\AppData" to
some support paths located in the user profile. For example the Main
Customization File's path is listed as
"C:\Users\%username%\AppData\AppData\AppData\Roaming\Autodesk\ACD-A
2008\enu\Support\ADT" when it should be
"C:\Users\%username%\AppData\Roaming\Autodesk\ACD-A 2008\enu\Support\ADT"
Fix the incorrect paths, hit apply, and you are good to go.
I wonder why the ADT team chose to disable 64 bit installs. The program
seems to function fine in Vista 64 bit. ADT 2006 and 2007 installed without
a hitch on this same system even though you had to set them to run as ADMIN
in order to be able to use them, so I am not buying the whole "the ARX
programs don't work with 64 bit" argument. I switched to Revit a few years
ago anyway, but it is a shame what they are doing to ADT. Peace out.