If I understood right, yes it is possible

You can fill in everything: buttons, check boxes, list boxes, edit boxes and normal text! It usually goes like this:
did -ra <name> <id> <text>The
-a will fill the ID with the text you determine, so you kinda need that one for puting text.

The
-r switch, however, means that it will first
erase all data in the ID and then write what you want. If you would like to
add something, do not use the -r; if you want to just fill it and erase the previous text, then do use it

In your case you could use the On Start event, open the dialog and then use the On Dialog > init event to fill the listbox/text/whatever..
I hope this was what you were looking for

Zyzzyx
Edit: MonoSex has got a point too 