SuSE.. I'm not too familiar with SuSE so bear with me here...
In YaST2 (the main SuSE configuration tool) somewhere, you can set up network connections. Make sure both are set up to use DHCP and that they both activate on boot. Also make sure (for now) that only one card is actually hooked up to an eithernet cable, so it doesn't get confused if there are two.
Lastly, go to a command prompt (shell) and type /sbin/ifconfig . Can you copy down the first two lines you see for each network connection. Each network connection is specified on the left (eth0, eth1, wlan0, wlan1, etc). It should look something like:
Code:
eth0 Link encap:Ethernet HWaddr 00:15:F2:1E:30:AD
inet addr:192.168.0.6 Bcast:192.168.0.255 Mask:255.255.255.0
If you can tell us what values you have (I'm more interested in the second line) for each network connection, we may be able to go further with this.