WRT54G2 Install Error(Different Please READ!)

Question

So I have a WRT54G2 router that doesn't install correctly.
I have installed it once before but I moved and I was given a new router/modem that I was heavily unsatisfied with and so I want to switch it for my WRT54G2 but the error 322 pops up after failing to detect the router. The router is on and I can access the router page, buut the error is there no matter what. I have tried with different ethernet cables, different steps, resetting the router and modem, restarting the computer and installing it again but nothing fixes it. I am installing it with the CD that came with it, on a desktop like it's supposed to be!
Additional Details:
>Desktop is Windows XP, and there are 2 laptops with Windows 7
>Router is WRT54G2 Version 1, the router given by my new ISP is a Thompson TG585v8
>ISP is Telmex Infinitum(Mexico)
>DSL cable connection, network is PPPoE and I know the username and password for those.

Answer 1

A few other suggestions if you continue to have trouble. Some DSL modems actually do the PPoE rather than the router. If this is the case, change the router's Internet Connection Type to Automatic (DHCP) so the router pulls an IP address from the DSL modem and then configure the modem (see the modem's administration page) with the PPoE username/login name and the password. Further, sometimes the modem will hand out an IP address (192.168.1.1) to the router's WAN/Internet port that conflicts with the IP address the router uses for its local network DHCP server. If this conflict happens, changing the router's local network IP address to 192.168.2.1 should solve the problem. Note: If the router's local network IP address is changed that becomes the new IP address to access the router's administration pages.