How to know if .NET language pack is installed?

Before I go to to much trouble, is there a way to tell in the registry if the .NET language pack is installed? I am trying to build a installer for some of the Bentley products. The one they provide causes trouble if I try to automate it. I am thinking it may not install because it does not need to. Can somone provide some guidence?
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JefKveConnect With a Mentor Commented:
CHeck for it under HKEY_Local_Machine>software>.NET Framework
Mister_SpockAuthor Commented:
I decided to split the points because both answers were great. The assisted answer showed me a new registry key to look into and the accepted answer showed why I would never find excatly what I was looking for. Thanks...
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