how to remove xcode 4.1 and then install xcode 3.2.6?

To the best of my knowledge, Xcode 3.x is not compatible with Lion. If you could find a way to crowbar it on, I doubt that it would work; at least not correctly and reliably.

Regards.

Just an FYI I had xcode 3.2 installed on my snow leopard system and have today just installed Lion and I just cleaned and rebuilt an App I had developed prior to the Lion install to test to see if it would work. I was told it would but wanted to make sure and it successfully rebuilt and works in the simulator.

My issue is a bit different I need to install 4.1 WITHOUT corrupting my 3.2 installation as I may have to go back to rebuild a 3.2 App as we had a fairly unique setup for our xcode. The problem as I see it currently is I do not know how LION installs things in LION xcode is an App downloaded from the App store but I need to be able to download to something other than the default directories and I am not sure if I have that option in LION when installing an App(xcode) from the App Store