[maemo-users] Is it possible to copy contacts from address book on n900 to sim-card?

[From: James Brown]

Sometimes ago it was needed to me to copy some contacts from one
sim-card to another (both of them I use on another phones than my n900).
I didn't want to run an old sim-card on the same phone with new one and
I decided to copy contents of one ot them to my n900 (when its
gsm-functions are stopped) and after that copy that contact to a new
sim-card.
The 1st step was succesful but the second... I didn't find how I can to
copy contacts from address book on n900 to sim-card.
Is it possible to do? Or maybe you can advice me any application which
can do it?