TTF fonts : Missing charsets ...

[Christophe TROESTLER <Christophe.Troestler@umh.ac.be>]

Hi, I use wfstt to get TTF available to X.  I can see the fonts with
	xlsfonts | grep ttf 
but when I try for example
	xfd -fn -ttf-verdana-medium-r-normal-regular-0-0-0-0-p-0-iso8859-1
I get 
	Warning: Missing charsets in String to FontSet conversion
	Warning: Unable to load any usable fontset
	Warning: Cannot convert string "-ttf-verdana-medium-r-normal-regular-0-0-0-0-p-0-iso8859-1" to type FontStruct
	xfd:  no font to display

I am a bit lost about what to do.  Does somebody have a clue what to
look for?

ChriS

P.S. I run 
	xfree86-common 3.3.6-11potato