New
#11
Warning
GARY, BE CAREFUL USING ANY OUTSIDE FIRMWARE.
Follow this link to the Cisco support page for this router model.
Again, the issue is not with your router but with the laptop.
I suggest that you re-install the driver for your laptop's NIC/WIRELESS card.
Here is the Cisco support page for your particular router: Linksys by Cisco - WRT54GS Support
Also, are you knowledgable on how to access your router through your web browser?