Thanks for the reply.
Turning off Code Analysis (CA) for all the other projects is a bit of a hammer to crack a nut. My first thought was that it would be impractical given the 100+ projects I have but then again it does take ages to run CA...and I'd have to make the projects writable (Source Control) to change them, all a bit messy.
The post build event may also a bit messy. Firstly I'm using Code Analysis rather than FxCop but assuming I can get CA to post process the code the whole point it to get the output into the IDE so I can use all the nice tools, such as right-click supress message. If there is a way of doing this via a post build event then please let me know!
Surely I'm just missing some simple hidden menu command or option or something?