Is there anybody using AVRprog ?

I just make a AVRISP , but it noly work with AVRprog, this is my first time to use AVRprog , so I have some question , Is there anybody using AVRprog ? please help me , thank you !

1, in “Device” , there are “ATmega 8” and “ATmega 8 boot” what’s differince between them? and I want to write a bootloader to the MCU , which device should I choose?

2 , I can’t find “CKOPT fuse” in “AVRprog” , is it call another name? “Full amplitude” ?

3 , Can I use “Ext. XTAL High Freq” instead of “Ext. Crystal/resonator High Freq” ?

thank you!