Hi Matou,

Welcome to AO!

I took your post and put it in it's own thread as it didn't seem to fit in the old thread you had replied to. I've changed the title and put it in a forum where it would be most likely answered.

It is possible to determine if a keylogger has been installed on a system through a variety of methods. The first thing I would do personally is get something like ProcessExplorer from SysInternals to see what processes are running and which ones are suspicious.