Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I believe you are looking for a 8051 programmer. This site have one that uses parallel port for 8051 from Atmel. It also has links to other free AT89C2051 programmers, including ones that use serial port.