Sorry, but your post indeed is a bit vague and irritating.
If you have an ANT device, it usually connects to a PC WIRELESSLY - via ANT.
But what type of device is "The ANT device" of your post? Is it a sensor, or a display unit that receives data from ANT+ sensors via ANT+?
Have you built it, or have you bought it, or have you just found it somewhere?
Cheers,
OMB