Question : How to setup Two Internet T1 and  Point-to-Point T1 on Cisco 2811 (three T1 through one router, is this a really bad idea?)

Have Cisco 2811 with one dual WIC that two Internet T1 will connect to, and single WIC that Poit-to-Point T1 will go into for the Remote site.
router has two FastEthernet inside interfaces... would like to send two internet T1s through Pix 506E firewall. would like internet T1s to do load balance/ failover.
Could you please help me with the configuration, remote site doesn't have internet, and it will have to use Main site internet connection.

InternetT1 -> RouterS0/0/0 ->
                                                    Ethernet0/0 -> Pix506E -> Switch
InternetT1 -> RouterS0/0/1 ->

Point-to-PointT1 -> RouterS0/1/0 -> Ethernet0/1 - Switch

If i only had one internet T1 i would assign public IPs to Ethernet0/0 and to outside interface of PIX, but with two internet T1, how do i configure both of them to go through Pix?
The Remote site, should it be on the same subnet as Main site?
I'm sorry i'm new at this, i was only able to get the Main site to have internet access through one of the T1.
Thank you very much for your help.

Answer : How to setup Two Internet T1 and  Point-to-Point T1 on Cisco 2811 (three T1 through one router, is this a really bad idea?)

Looks like the lightbulbs finally came on and we're on the right track.
Agree with malken00 - ask the ISP to enable BGP and advertise default only. You will get 2 equal cost defauts and advertise your /24 subnet through both links. They should be happy to help you out with this and we can help with the config if you need it.