dear friends, I have sent this question 2 or 3 days ago,but i did not receive any answer,so i think maybe you have not receive this question.let me repeat it: i got an application note from microchip web site(www.ultranet.com)whose name is an593.zip.after unzip this file i got an593.ps file,but i could not read it. can you help me how can i read this file in dos or windows? i am looking forward hearing from you in soon. regards A.Marami electronics engineer