Vista has caused quite a few problems for ProFantasy in the past. Most of the issues go away if you install somewhere other than the program files directories. The Viewer is not supported under Vista or Win7 at this time, due to the significant change in Windows' security features, but it is possible to get it to work if you know how to contravene those features.

In any case, though, I don't think you would be able to easily extract the symbols from an FSC using only the Viewer. It's specifically designed to allow you to look at a map in CC3/2's native format without being able to extract the data. I suppose you could take a screenshot and cut it up in the Gimp, but that would be quite tedious.

In any case, there are quite a few different libraries linked in this thread. If you'd like someone to go to the trouble of converting something, you should narrow down your request to the specific collection you're interested in.