Automate it.
You could integrate StyleCop and FxCop (Code Analysis in VS2008) into your build process.
Thus, when someone checks something in which breaks the rules, the build will break and they'll have to fix it. If you don't have an automatic build process which supports this, you could always run the tools manually prior to code reviews etc.
You probably won't find a perfect match for your coding standards, but you should be able to get something pretty close.
StyleCop
http://code.msdn.microsoft.com/sourceanalysis
FxCop:
http://blogs.msdn.com/fxcop/