said by Smith6612 :

This site should be helpful for helping you determine a FiOS capable router. Look for the WAN to LAN throughput category. It will rank routers from the fastest throughput to the slowest throughput, including your WRT54G.

»www.smallnetbuilder.com/componen···mid,189/

On that list, a D-Link Extreme Gaming router is the fastest one there, boasting a bit over 200Mbps of theoretical throughput. A linksys WRT54G boasts around 54Mbps of theoretical throughput and below on WAN throughput. Your Linksys should be OK to handle it, given that you give it a few tweaks at the most. That is, unless you have Version 1.0 which gives a horrible 20Mbps of total throughput. If you have Version 1.0, get yourself a new router