WN2500RP Extending via ports

Hi, 

 Hi have 2 WN2500RP extenders for each end of my home with a WNDR3400V2 Dual band router.

I have had so so success with wifi extending with for whatever reaon, the connections to the router dropping out....

So my question is this...

I have wired lan to where the extenders are located, is there a way to use the 10/100 cables to connect to the extenders and then there would obiouly be a super solid connectiont to the extenders.

and then the obvious next question is how do I set it up...

thanks 

vertol