That was my approach last time.
After removing all interfaces and rebooting I started with eth1 (in previous attempts I had started with eth0).
I set eth1 up the first time with a static IP, no joy.
I removed the interface, restarted and configured eth1 as DHCP, also no joy.
Both times the settings I configured survived a reboot and both times I could start the interface with ifup and verify the correct settings with ifconfig. Both times the interface could not interact (either with the LAN or the DHCP server), eth1 just laid there.
I continued after failing to gain a functioning network interface on eth1 just because I was curious if eth0 would function. It did not function any differently than eth1, settings saved but no function in the interface.
It does not matter which interface I configure first or which interface I choose to commit to the LAN, neither card will succeed in establishing a working connection whether the other interface is configured or not.
Oddly enough, I had been meaning to check out PcLinuxOS Phoenix edition anyway so I burned an iso and booted this server to the live cd.
Both cards are correctly identified in both the "setup a network" section and the "network center", no double listing and I can configure either card (eth0 or eth1) to either configuration successfully. Both connect without issue to either network (my static LAN or my DHCP server) and both will connect simultaneously without issue.
I have no idea what that means or why, I just thought I would toss that little nugget in there in case there is a different network configuration element to the 2010 beta release that might shed some light on this.