Since FxCop 10.0 is distributed as part of Windows 7 SDK, you have to do some download and extractions to install it on servers which are not running Windows 7.
I followed instructions on http://ruthlesslyhelpful.net/2011/06/09/liberate-fxcop-10-0/ to extract the setup file and uploaded it to this project for easy access.
Read more: Codeplex