build debug script format

[tecman]

I'm trying to use EA for the first time to generate a sequence diagram from running my .net c# solution (with 4 projects).

What should the build & debug script commands should look like to build all 4 projects? I've tried:
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"C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe" /Build Debug CT_Contacts_Manager.sln
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but it just returns "Build Manager completed with exit code 1"

Is there a way I can see the required syntax  by looking at the build command VS2010 uses?

thanks!