When using trackir I get lost where im looking at vs where my character is pointing at. This is mostly due to the crosshair becoming near invisible when its over the ground surface etc. This only happens with the weapon down crosshair, the weapon up "v" crosshair is very easy to see and works well. It would help if the transparency of the crosshair could be set to 0 for when using trackir because now its just not fun anymore to use trackir. Melee killing zombies is near impossible without turning trackir off now.