Need help with configuring a way to get my ZTE ZXDSL 831AII Dataone modem/router (not a wireless) to be used with my Linksys WRT54G Version v5

I have tried keeping ZTE ZXDSL Dataone modem to be on bridge mode and using WRT54G through PPPOE mode with no success, I have tried going through the wizard for WRT54G but no luck. I have tried it the other way i.e. Dataone on PPPOE and WRT through DCHP with no success, I have wasted about 18 man hours getting my internet to be wireless.

Any input will be greatly appreciated.

Thanks
Anand Padia