I searched the site and haven't seen any good explanations about the signs for keyloggers on your computer.
I have ZA IS Suite 7.248 installed along with spysweeper and a bunch of other programs like counterspy v2, ewido AVG, superantispyware, a2 antispyware, and windows defender for on demand scanning only and have not detected a thing in either safe mode or normal mode.
I am also using ZA force field (which I read can detect them).
Operating System:Windows Vista Home Premium
Product Name:ZoneAlarm Internet Security Suite