DSL modem and Linksys Wireless Router not...

I came home for holiday break and hooked up my Linksys Wireless G wireless router to my mum's DSL modem (A Westell).

It worked for 2 days when I accidentally deleted my password on my wireless laptop. I figured I could simply reset the Linksys and make a new password.

Unfortunately, I deleted all my settings on the Linksys by holding down the reset button for 30 seconds, and now I can no longer connect the router and my mum's desktop at once.

When it worked- the setup looked like this:

Phone line ---> Westell Modem ---> Linksys Wireless Router (WRK54G)

and the Linksys then connected physically with an Ethernet cable to Mum's PC (Vista) and wirelessly to my Dell XP Laptop.

We get service through Verizon.

Any chance anyone knows what settings my router should be at? Right now, I have the PC connected to the Linksys and it reads as a Local Network only, and no internet connection. My laptop connects to the internet, but the desktop PC cant make the connection unless it's plugged in to just the Westell modem that Verizon gave us when we signed up for their service.

Many thanks in advance.