Keystroke Logger

How can I tell if there's a keylogger installed on my computer?

A WhatIs.com member wants to know: Is there any "test" one can do to see if a Keylogger program has been accidentally downloaded as a result of installing a new program? How can you find out if a Keylogger program is on your system?

evidence of a trojan horse on a laptop hard drive. If so do you know of any firms in nyc that can do this ?

is it possible to find evidence of a trojan horse such as a key logger on a laptop hard drive. If so do you know of any firms in nyc that can do this ?

Log AS/400 user key strokes

I need a way to log the key strokes of an AS/400 user (on green screen). I want to know everything entered, including menu option numbers entered on