Network connection using a d-link-122 and an inventel DW-200

Hi everyone, well I'm not on suse linux yet, I've tried to install it, everything was all right exept my connection to my network and consequently to the internet, my usb wifi adaptator (D-link DWL-122) was correctly installed, I have well configured the network connection (well, I think so, but maybe someone could give me a tutorial), and when I wanted to connect to my router (a DW-200 from inventel) : "connection failed". Please, can someone, especialy someone who have had the same problem as me, give me some help ? PS : I'm french and I'm just 14 so sorry if my english isn't perfect.