you do not need such a big ckt to prog DS89C ics.
they can be programmed using only 2 transistors. see the attached file (pdf). you can use hyper terminal for transferring hex file to these ics. software is also available for these purpose.
if you need i can upload the software too. it is also available on maxim website.
r u talking abt Dallas Semi Microcontroller Toolkit
if so i have it
please give the details , how can i transfer hex through hyperterminal ?