411 REFERENCE · Wikibooks
America's Army: Special Forces/Cheat Detection
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
You can detect cheats by viewing Screen Shots captured by PunkBusters PBSS utility.
There are several free tools which makes this easier to do.
PBCool: http://pbcool.blogspot.com/