System.DirectoryServices.ActiveDirectory is showing up as undeclared after installing telerik

I have attached 2 screenshots to show my confusion. I have a working copy of the page on my local computer. When I push it up to the dev server and open the file in visual studio 2010 pro, I see the:
using System.DirectoryServices;
using System.DirectoryServices.ActiveDirectory;
underlined in a red line. This does not happen on my local pc. The only difference is we have telerik rad controls on the server, and not on my laptop. Any ideas? screen shot of the NOT working code screen shot of the working code from my pc
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Bob LearnedCommented:
I don't think that Telerik is where you need to look.  I am more curious why those using statements are greyed.
sqlagent007Author Commented:
I did not have the .dlls registered at the project level..doh!

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sqlagent007Author Commented:
I needed to register the .dlls to the project
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