Hi Andy,
Welcome to the forum!
Although I have an EasyPIC7 board I haven't yet used it so I'm afraid I can't help with hands on details.
However, I do know they have a user manual (I'm sure you got a printed one as well) for that board and that there indeed are some instructions in it on how to install both the drivers and the mikroProg programmer application. In short it's not enough to simply extract the files, you need to run the setup file for the OS in question - at least that's what the manual says.

/Henrik.