[SOTC1987]

My friend had a similar problem. The wired computer worked but the wireless did not, even though it was showing full signal. After messing with the modem and router for a while I eventually found the reset switch on the modem and hit that, wireless worked beautifully after that. I would suggest getting the wireless computer back to where it recognizes the signal but wont connect then hit the reset switch on the router, this would be your DSL box. Give it a minute or two then see if you can connect.

By the way, praying about it couldn't hurt. =)