Hi
Here is what I did to fix mine:
1. Enable TCP/IP Protocol on SQL Server.
2. Set SQL Browser service to Auto Start.
3. Disable the Windows Firewall.
4. Uninstall SAP (everything)
5. Delete the C:\Program Files (x86)\SAP
6. Reboot the machine
7. Reinstall SBO 9
After all of this, I installed without a problem.
Thanks,
Karl