http://www.e4fc.org/dacaguide.html
Yes your friends dad can write one for you. It doesn't have to be exactly like that but it gives you an idea of what to put. They type it for you make sure is signed and dated.
__________________
Sent 10/19->WAC accepted 10/24
I-797 arrived 10/27
Biometrics letter arrived 10/29 Biometrics done 11/20
EAD: February 7, 2013 SSN:Already Have
DL:Gonna take a month or two..haha.never bothered to learn..too scurred