Problems with unicode math signs

Hello everybody!
I`m having trouble with producing a print of the mathematical signs: 
"larger than or equal to" and "smaller than or equal to" Unicode: ≤ 
and ≥.
I have used userconfig to make my fonts and embedded them in my pdf. 
(using TimesNewRomanPSMT to create my own font which I call "Times 
Roman").
This works great except for these two mathematical signs. Is there a 
specific font which has these two signs?  Can anybody help? is there a 
workaruond that I can use? The font needs to be embedded when I send the 
document to the printshop.
I use FOP 0.20.5 on Win XP

-- 
Rolf Hustad
M&K Dokumentasjon AS
Telf: +47 55 54 22 96, fax: +47 55 54 22 99, e-mail: rolf.hustad@c2i.net