Question : Setting up failover using 2 wan lines

Our colo circuit has gone down twice this week. I was put in charge of adding a second line to our colo and setting up some sort of fail over.
Currently our setup is a Cisco 1800 router --> Cisco ASA 5500 --> Cisco 2960G switch

What would be the most robust solution on the budget. Should i get a second cisco router and ASA and set up HSRP or is there some sort of Wan Loadbalancer I can use with 2 routers and a single ASA for this. I need to get this done on the budget,
I understand that the loadbalancer route still leaves  the ASA as a single point of failure. but we do have a Cold standby that is being shared by 2 locations that are close to each other that is why i can't tie it up

Any suggestions or a push in the right direction will be appreciated.

Answer : Setting up failover using 2 wan lines

>not have them switch to rdp to different IP or anything but switch over automatically.
you need to run BGP for this, or a provider that will allow seamless fail-over using the same public IP

You utilize DNS for seamless fail-over:
http://www.peplink.com/balance/tech-spec/

This product does incoming and outgoing very well

Billy