Have Flex 3.0 need to test 3.4

I am running Flex Viewer 3.0. I would like to install Flex Viewer 3.4. However, I do not want to disable all my apps built in 3.0.

How do I install 3.4 without disrupting my services already running in 3.0?

In other words, I want to run 3.4 and 3.0 simultaneously.