I found a MS Resolution for this problem:
RESOLUTION
To resolve this issue:
Quit Setup.
Start Registry Editor (Regedt32.exe).
Click the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Small Business
On the Registry menu, click Save key. Type a name for this file, and then click Save to make a backup of the key.
Delete the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Small Business
Restart the SBS 2000 Integrated Setup. Follow the instructions in the wizard, entering values as appropriate. When you reach the Component Selection screen, verify that SBS has its action set to Install. Follow the instructions to complete the wizard.