AVR-Chat

Thanks before for the pleasant to read and may give an idea to my 
problem.

I had program an ATMEGA8535 using my min. system with ex. crystal 
oscillator. Actually never at this time (I always use calibrated 
internal osc, i scared).

I use 4 MHz crystal oscillator but at those time i don't know what's 
the problem my ATMEGA8535 doesn't reponse anymore. I use ponyprog 
programmer.

Is this true using osc pin in ATMEGA in order to wake up my avr again?

:(