You don't. In general, whenever you need to go from raster to vector you have to do it by hand. I'd guess that there isn't a program to take bitmap fonts and convert them to TrueType without some, or ...

Postscript is all but gone, and today, newer font standards such as TrueType and OpenType rule the roost. Here's how we got from desktop PostScript in the early '80s to today. When the Mac first ...