Talking to myself again... Answered my other question re Mamehooker image on second monitor. I needed to edit the default.dis file to put in the x value in pixels for my second monitor.
Looking at it, Mamehooker isn't that elegant a solution, I'd rather have a single piece of software running, but I can't get the multimon plugin to do anything.
I've switched on multiple monitor support (which causes problems with GameStation but that's for another thread as I'll stick with a different layout for now) which lets me change the settings for multimon but it still shows nothing. I've tried it with marquee, flyers etc, but nothing seems to happen.
Any ideas or is it broken? I'm on version 2.0 by the way, I can't see anything in the readme for 2.1 that mentions it.