Oh yuck.....this is a hard question to answer......
Ok what I did was I got the latest version of FSOpen from a stickied topic in the SCP forum. Then got the 3.6.8 VP files from
http://scp.indiegames.us/news.php in the downloads section. The MYZpack file (I think) has the files you need.
Keep in mind that a fairly modern computer will be needed to handle the updated graphics correctly, otherwise lag occurs.
If that doesn't work get the complete package from ShivanSPS's topic (it's a torrent).
FRED builds can be found in the same topic as the CVS builds.
Get Launcher version 5.3 from above link.
Follow karajorma's FAQ
to the letter and everything should work right. In fact, I think this question might be answered better on said FAQ... check the website ring at the top for his FAQ.