I have been running White Russian on my Linksys WRTG54 for a few months now on a Time Warner Cable modem with zero problems.  Last week we switched over to Bell South DSL and I'm no longer operational, we got the "Westell DSL2 + router"  and I hooked it up to the linksys just like it was with the cable and the router doesn't seem to be able to connect to the modem.  Everthing inside my network is still functional, file sharing, print sharing, etc.  I'm just not getting anything from the outside world.  My roommate hooked up his Apple Airport and it works fine, except its not compatible with any of my P2P software.  Any ideas as to what can be causing the problem?  I can't find an owners manual for the DSL modem, I was thinking maybe there is something peculiar about it.... Any ideas?

sounds like ip addressing problems.  if the new box is a dsl modem + router than it could also be trying to assign a DHCP address at the same time as your old linksys.

I would recommend you attempt to make a static IP from within the openwrt admin console's WAN area.  If that doesn't work, than try to disable DHCP on the new router.

That didn't seem to do it, although I understand what your saying and its a good point, It didn't get me anywhere....

So just to confirm, your roommate hooked up his apple airport to the linksys or to the dsl modem + router?

Try to turn off the routing capabilities of the new modem.

I tried turning off DHCP with no success.  I think my next attempt will be to put the modem in Bridge mode and try and get the Linksys to handle the PPPoE.  What do you think?