By default, the command prompt in Vista does not have admin privileges enabled (which probably explains the cryptic error that a number of users are seeing when trying to manually register the vbscript.dll.) To work around this, try running the command prompt with administrator privileges by right-clicking on the Command Prompt icon (in the Start menu > Accessories folder) and choose the "Run as administrator" option. From here, manually register the dll by entering the command: regsvr32.exe c:\windows\system32\vbscript.dll.
Scott Lillibridge, QA Manager
Extended Design Group