>Will a 3640 be a plataform that could be used with this software for IP to IP routing
Unfortunately no.
The Cisco Multiservice IP-to-IP Gateway is built on Cisco IOS Software and runs on the following platforms:
Cisco 3745 Multiservice Access Router
Cisco 3725 Multiservice Access Router
Cisco 3660 Multiservice Access Platform
Cisco 2600XM Series Modular Access Router (Cisco 2650XM, Cisco 2651XM, Cisco 2620XM, Cisco 2621XM, Cisco 2610XM, Cisco 2611XM)