Here is what you need to do:
1. Configure these additional IP as secondary WAN IP.
interface FastEthernet 0/0
ip address A.B.C.D 255.255.255.248 secondary
2. Create the static entry
ip nat inside source static ip 192.168.1.61 A.B.D.C extendable
3. this may not be necessary since there is no access-list in his WAN interface (FastEthernet 0/0)
access-list 104 permit ip any host A.B.C.D
Marcos