John you can start by using the CS Cleaner tool to remove your current installation. You can find details on the use of the CS Cleaner tool at CS Cleaner Tool for installation problems | CCM, CS6, CS5.5, CS5, CS4, CS3 - http://helpx.adobe.com/creative-suite/kb/cs5-cleaner-tool-installation -problems.html.
If you still face installation difficulties then I would recommend reviewing your installation log files. You can find information on how to locate and interpret the installation log files at Troubleshoot with install logs | CS5, CS5.5, CS6 - http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5 -cs5.html.
Please feel free to respond to this discussion if you have any specific questions regarding the errors contained within your log files.