the burner is a seprate part it doesnt need to do any thing with you program, it just burn/dump the program into the controller.. you need a seperate CKT to burn at89c51 then take out you controller from there and then put into you ckt….
the the link an givng you is the simplest and the cheapest one to make a burner(for at89s series) it works on parallel port… the only way to burn the at89c51… there are other ckts too that uses serial port but then again they are bit complex and at then and the convert the data into parallel stream… k leave it, it doesnt concern right now..
why dont you swith over s series… i will find if i get any simpler ckt for 89c51 which you can made on your own…..
have you heard of philips P89V51RD2 controllers, they have the same archi as 8051 and its very eary to make it burner….