Somehow I got a whole bunch of pms and emails about converting my skoped meshes for use with :ffvstr: back to back, and while I've dealt with them individually... I kind of want to ward off further pms and emails.
First: All my skopes work with both :ff: and :ffvstr: if at all possible, and always work in :ffvstr:. You don't need to convert them if you're just playing.
Second: If you need to convert them to :ffvstr: for whatever reason (such as using it on a skope) I quite literally wrote the book on that. (http://frworld.wikispaces.com/Converting+Skoped+Meshes)