I use BDicty (www.beiks.com) I am not sure if it will be as comprehensive as you might want, but I found it very helpful when I was in France this summer.
The package I bought includes an English to French dictionary, a French to English Dictionary and an English to French phrase converter. I have been really pleased with it.
Burdie
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"Hanging on in quiet desperation is the English way"
Very nice thread as I have been trying to find a French-English Dictionary myself! & just so happens to have this thread.
I'm currently using AbsoluteWord's RoadLingua
found it last night at www.absoluteword.com
It has many different language data base & it should be a freeware but just has a nags screen ocassionally.
__________________ PalmTX + 512SD
UX50(JP)+256MB MS Pro
NX70/V (JP)+1G SanDisk CF
BDicty Dictionary version 5.3 with landscape support (Palm Tungsten T3, Sony CLIE UX40, UX50)
is coming in the second half of October as a free upgrade
something that sounds interesting...
__________________ PalmTX + 512SD
UX50(JP)+256MB MS Pro
NX70/V (JP)+1G SanDisk CF