Help Un-installing SQL Server 2005 from Server 2003

Hi Everyone, I have a Server 2003 box that had 2 drives setup in it (C: and D:).  The OS is on C: and I was using D: for SQL 2005 Program.  Well, the D: failed and cannot be recovered. I want to install SQL 2005 on to the C:, but cannot seem to just be able to install it to C: straight up.  So, I decided to uninstall it (since it is still listed in the control panel) but that fails with an error mid-way through indicating an "Invalid Drive: d:\" It also shows up in Event Viewer as Error 1327. So....I am not sure what to do, I see many registry entries referring to the now non-present D:.  Should I change those?  Delete them? I just want to get SQL installed back on to this machine, and this time to the C: Any ideas?  Thank you for your time. Dave