Question : Problem: PPP Multilink on Cisco 1841

I'm installing a brand-new Cisco 1841 router with two WICs.  I will be connecting two T-1 lines.  I need to bind them with "ppp multilink" for maximum bandwidth, while maintaining a single outside interface IP address for VPN clients to connect to.

Can someone point some sample configs for setting up PPP Multilink for two T-1 connections?

Answer : Problem: PPP Multilink on Cisco 1841

If these two T1 lines are from the same ISP, then the ISP must also be configured for Multilink PPP. You cannot configure your end independently. If they are in fact setting up for multilink, then they should provide you with a corresponding configuration example.
Due to the extensive CPU requirements of MLPPP, you'll want to keep an eye on CPU utilization because performance can decrease dramatically when you're thinking that it should increase... http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a00804a40f9.html
Simpler example:
http://www.cisco.com/en/US/tech/tk713/tk507/technologies_configuration_example09186a0080093d69.shtml