1 adsl modem + 1 wireless router + ftp server

hi,
I need some help to configure my network. I have my FTP server in a windows 2003 server, and I want to connect to the server using the internet, the problem is I can’t configure correctly the adsl modem and the router.

ip modem : 192.168.1.1
ip wireless router: 192.168.2.1
pc’s on network : 192.168.2.x

help please.

thanks.