[CLUE-Tech] Setting NAT IP address range in a Cisco 675 router/modem

[bof]

I've currently using a Cisco 675 ASDL router with NAT for my local 
network. It generates IP addresses in the Class A private (10.0.0.x) range.

Is there a way I can reprogram it to generate addresses in the Class C 
private range? What commands would I need to give the cbos if I can 
reset this?

Thanx.