Hi,
The controller P89V51RD2 from philips has ISP programming facility and its the most imporatant reason why it is widely used specially for students who can not afford costly program burners for the rest of the controllers.
You can use FLASHMAGIC software for dumping hex files into this particular controller. The software will send data on serial port of P89V51RD2. The controller will ask you to RESET DEVICE and it will be done.
If you want more help on this, feel free to write us back.