Is it possible? I tried to install 8 when I have 9 installed but the installer bombed out when it saw version 9.
Any ideas how to work around this?
You have three options:
1) Side load install. This is where you start with the lowest version, moving upwards. Making sure to install each to a separate location and not upgrading. You may not be able to do this due to the limitations of the installer.
2) VMware. Setup a virtual machine with one of the versions installed. This is a heavyweight solution just to get a pdf reader.
3) Sandboxie. go to http://www.sandboxie.com/ and install the software. Run each installer in a different sandbox and launch the .exe as needed. This is a light weight solution.
That being said I have a question: why do you want multiple versions of reader on your computer? What are you trying to do? All reader 8 files should be compatible with reader 9.