I've decided to branch off to make this more readable, also the OS has changed.

OK, anyway -

Document says:
Int FAR PASCAL funcTS400SetLoadFont(int iParameter, int iInputValue,
unsigned char *pbInputFontFileName)

My declare is:

declare integer  funcTS400SetLoadFont in BUICAP32.DLL integer iParameter, integer iInputValue, unsigned char *pbInputFontFileName;

The call is:

m.nretval=funcTS400SetLoadFont(0, 0, "C:\DCC\Redist\pc2424.fnt")

and the error is:
"Too many arguments"

which confuses the heck out of me and as it sure seems to be 3 and 3.