OK, from a client check what is the ipaddress that is assigning. You can do this from the run command and type
Code:
ipconfig /all
This will give you the IP address, subnet mask, gateway and DNS servers.
In a linksys setup usally the gateway and DNS servers will be the router itself, so 192.168.1.2
I am guessing that for some reason the old router IP address still is assigned.
There also could be that the cable modem still has the IP cached for the old config. To resolve this unplug the power for both, the router and the cable modem.
After 1 minute connect the cable modem again, and wait until the modem finishes booting and registering (until Internet LED usually is steady), this can take about 1 minute. Then connect the power for the router so it gets the IP address from the modem