Fred,
Time continues to tick away and memory persists to become a weak link, however, I believe starting with 2.5 or 2.51 GSP began to support Open Type fonts. The utility is still titled TT Font Converter (G32ttfcv.exe) and will not only see and work with .ttf fonts but .otf as well. Just as a FYI; this utility is not part of the protected portion of the software (can be executed without a dongle).
Animenick65,
Upgrading to the current version will get you where you want to be. In the mean time, let me check the EULA and with Gerber to see if the utility can be forwarded to you.
To do a conversion “properly”, allowing for full use of a font, you will want to “disjoin” the font using TT Font Converter then use the Font Designer utility to assembly in the proper .gsf format. Fred has a post or tutorial here somewhere explaining the process.