Manually Routing Traffic to a Specific IP

So, the question of the day is how to solve a routing problem. Hopefully some of my secret blog readers are CCNA’s who don’t mind working with Linksys and Belkin hardware. Yes, I know, Linksys embarasses Cisco. Moving on…

Comcast’s continued problems have caused me to get a DSL connection as a backup. However, I want the live cameras to connect to uStream through the DSL all the time, while all other Internet-connecting applications connect via the order of precedence (Cable first, then DSL if Cable is out). Therein lies the complication.

Let’s say I have a configuration like this:
Cable Modem: 10.10.100.1
Cable Router: 10.10.1.1
DSL Modem: 10.10.0.1
DSL Router: 10.10.2.1
PC: 10.10.1.2, 10.10.2.2
[Switch connecting PC and Routers]
[others...]

In this example, PC has a default gateway of 10.10.1.1, with a secondary gateway specified as 10.10.2.1. The PC’s DNS servers are configured this way too. Because of presence on both subnets, it can talk to both routers. When either modem fails, the PC switches to the other connection successfully after a few seconds and reinitialization of everything that uses the Internet. The LAN remains up throughout the change.

The PC wants to use 10.10.1.1 whenever possible, except for all connections to 216.52.241.133 (uStream). Those should go through 10.10.2.1. Optimally, UDP connections would be the ony ones ignoring the order of precedence; TCP connections would still connect to 216.52.241.133 via 10.10.1.1 - Though this is not required.

Anyone out there on these Interwebs have any info on this kind of a configuration? Keep in mind, this is mostly consumer grade equipment, so I can’t go setting static routes within my cheapo routers. They don’t even take telnet connections (Sheesh!).