Hey! Thank for the reply
1) I found that sketch! I was about to build an AVR on a breadboard
I will try and make some modifications to the Arduino IDE .txt config files. I saw somewhere that you can set an uploader, eg AVRISP, the one that Mega-ISP "emulates"!
2) Also thought of that but I think it won't work because the on board AVR would interfere. It would work if I remove the on board AVR though!
I'm going to try and modify the IDE to upload a sketch to a bare AVR using an Arduino board with the Mega-ISP sketch