Which Mod i need to use to do it?

[Alexey?]

I wnat to make my forum url like this
http://www.tgt.co.il/f17/
instand of
http://www.tgt.co.il/forumdisplay.php?f=17


Do you know what should i do?

[yessir]

Pretty sure vbSEO does that.

[Alexey?]

Yeah Tnx.
Now i understand how it works