You could try 'fooling' MONyog by telling it is a LINUX server.
MONyog retrieves the information from the /proc folder (I think it is called) on Linux. This folder does not contain 'real' (disk) files – everything in this system folder is stored in memory actually – but the information is adressed as were it stored in files.
This is not a LINUX concept actually. Also UNIX's do this – and did since first UNIX's saw day of light in the 60'ties. LINUX inherited that concept from UNIX. However there are so many different UNIX branches now (SCO, AIX, HP-UX, Solaris, BSD's and probably more!) and we do not have a monkeyman's chance to test and code for all that.
We would of course appreciate a note if somebody observes that it works on other *nix. Of the many UNIX's I think that FreeBSD and Solaris are most important/most MySQL relevant.