Every time I try to install new software that uses InstallShield I get

 

1607: Unable To Install InstallShield Scripting Runtime

 

I have been trhough Microsoft fixes, but they seem to point to the fact that the installshield developer files are not on my system.  I am trying to avoid reinstalling WinXP as I cannot find my restore CD.  Any thoughts that might help me out?  Anything would be greatly appreciated.