System Center Capacity Planner 2007
With a recent case that I need to design the system infrastructure as well as the hardware specification of a SharePoint farm for a client, so I go and find the SharePoint Capacity Planner (CP) 2007 to stimulate a user model.
The installer has encountered an unexpected error installing this package. This may indicate a problem with the package. The error code is 2738.This issue is happened only in Vista, and the details and solution had been posted on TechNet:
C:\Windows\System32\regsvr32 vbscript.dll
I can download the SharePoint CP and continue my work now. :)