Need help with using PSSmeljet file.

I downloaded the Pssmeljet.zip file to get the cfg files to marry the PSS 777 and 747 panels with the great Meljst planes. The instructions that came with the file I found to be a bit confusing (maybe it is just me)and could not find an answer searching on the forum. :-hmmm Could someone give me more step by step instructions on how to get this to work. I have not messed wround with cfg files enough to know the ins and outs of how they work. Thanks for any help I can get.