Download and execute
Current stage of development: Beta V2 Release candidate
To use: Extract the zip somewhere then run ovemu.exe. More detailed instructions are located in the program itself under the 'Reference' menu. This will only run on Windows 7 and above as it was written with the .net 4.5 framework. Speaking of which, you may also need the .net framework. Get that here if you don't already have it.
(NOTE: I've noticed chrome can be an ass and complain about this download. Tell it to keep the file and scan it yourself - it's safe. Chrome can be paranoid when a file is not 'popular' enough... chrome is a jerk).