I remember people have asked about doing this before. I was just thumbing through the latest tigerdirect catalog before I tossed it and saw a firewalled router that does this, so I thought I'd toss it out for anyone interested in the idea (i.e., load balancing and/or automatic failover between two WAN connections). The particular router in this case (undoubtedly others) is from Xincom, the XC-DPG502 - $240 from tigerdirect. Has built in stateful packet inspection firewall, automated load balancing and network connection failover, NAT, filters, virtual servers, etc. 4 port 10/100 switch integratal and 2 cable/DSL/T1 WAN jacks.