Changing subnet address of a dialup adapter (Win2000)

[Darksamie]

Here is an interesting one....I have a NIC and a dialup adapter in this system. Changing the subnet mask for the NIC is easy, but I want to change the subnet mask for the dialup adapter. It defaults to 255.255.255.255. This would be fine, except I have more than 1 IP address in this system and that subnet mask will only allow 1. Any ideas?