Hi,
Hyperterminal is a communication tool. In windows xp, its by default installed but in Vista, 7 and 8, its not available. You can download it from website. Its easily available.
Once installed, you can connect RFID module with PC. for laptop you need usb to serial converter.
You can not identify unique tag number without reader. You need above mentioned setup.
If you find any difficulty, post us back.