Software Installation Problems

Hello,
I have a licensed Adobe Acrobat 9.0 Pro Extended program that I have been running for several years. Adobe no longer supports this version. I ran into some problems a few days back and uninstalled Adobe (all of it I thought) and then tried to reinstall it using my installation disc that came with the software. But when I insert the CD and run I get a message that all f Adobe 9.0 Pro is already installed, but I cannot find any remain files. How do I find them (I tried using the search for box at the Start Search window but when I enter Adobe Acrobat nothing comes up, the same holds true on and combination of Adobe plus Acrobat.

What can I do to correct this problem so that I can reinstall Adobe Acrobat 9 Pro Extended? I am running Windows 7 64 Bit with Service Pack 1 and the software is up-to-date.