I'm going to assume that sql 2005 installed correctly since you are no longer getting that error and tackle the other one to see if that fixes your issue.
Microsoft Office Primary Interop Assemblies program is a component needed to make this work obviously and sometimes it is already installed (causing this error). In this case, remove the Primary Interop Assemblies program, and then try installing Business Contact Manager for Outlook again.
Try the following:
- On the Start menu, click Control Panel.
- In Control Panel, under Programs, click Uninstall a program.
- Click Microsoft Primary Interop Assemblies, and then click Uninstall.
- Follow the instructions on your screen.
After it has been uninstalled fully try the instillation again and then let me know if you have any other errors.