RFID sending and receiving

hello everybody,
I need to know about a low-range RFID chip (about 5 meters) to transmit data to a receiver that is interfaced to the parallel port of a PC.
So, I need to know a sender chip's name, as well as a receiver chip's name.
How can I send and receive data using these chips? because I think that they transmit data serially, so should I give them serial or parallel data? and if parallel how many bits at a time??
thnx n advance

 

Her is a link to an article that contains a lot of information and references - http://www.eng.tau.ac.il/~yash/kw-usenix06/index.html.

Don't know how much luck you will have on the 5 meter range...

 

Thnx for your reply man,
I made some changes, I just need the range to be around 50cm to read RFID cards, and I'm looking for ready chips to read the cards.

 

Omron and STmicro both make devices for RFID. You may not like the prices. TI-RFid has quite a line, too. Check Digi-Key for chips & prices.