ok, guys there are other threads on RAT, getting IPs, Keyloggers in the Suck-o forums. You have read them right?
Options to installing keyloggers;
1. physical access to the machine, disk install.
2. Remote access to the machine; via email, spoofed web link, Remote Access Tool (trojan) to upload it.
I guess you neos could consider the question as a part of your learning 'how to be a hacker'. The question; How do I get a keylogger on to this machine. The answer should be a unique, out-of-the-box thought, because no computer situation will be the same. If you can't hack 'how to get object A from point B to point C' an algebraic formula that results in a open-ended answer, you are not ready for the next level.
The path to that answer is studying how networks work, and how computers interact on a network.
DNR