I need to provide on the same interface two DHCP servers, or somehow achieve this:

So MT is DHCP server and it has network 192.168.1.0/24, and a pool assigned to that DHCP (192.168.1.200-192.168.1.230). That part works fine.
I need another network which will be 192.168.2.0/24, and its pool, and it should be used by WP7 phone which can not set static IP address.
WP7 phone MUST use gateway 192.168.2.1 and MUST get it through DHCP, and all other devices connected to the network MUST get an address from my range (192.168.1.200-192.168.1.230)
How to achieve this?
Thank you