ip nat inside source static 10.10.10.10 66.73.xx.xx will give you a full translation bi-directional

I think these should help depending on your exact scenario.Static NATip nat inside source {static {esp local-ip interface type number | local-ip global-ip}} [extendable | mapping-id map-id | no-alias | no-payload | redundancy group-name | route-map |...

What is an example of what you are trying to do? Send traffic to a web server or something?