|You can if the the keylogger is acting like a true trojan but at the same time, didn't alter the netstat -an output.|
Run it from a command prompt & pay attention to the foreign address column. Look for a high port number after the IP address.
If the keylogger is sending the info through emails, it's another story.
What makes you think you have one & why don't you just remove it?
How do you know when a politician is lying? His mouth is moving.