ms-dos batch file - add text to beginning of first line and different text to beginning of all subsequent lines in file : source file contents (csv):
430,081216,081216,131231231231,,'',8686866,'Shamrock',,
1, ,5,,'',, ,01234567,32.50,
2,-,3,,'',, ,382847,25.92,
3, ,5,,'',, ,98765430,32.89,

target file needs to be (csv):
H,430,081216,081216,131231231231,,'',8686866,'Shamrock',,
D,1, ,5,,'',, ,01234567,32.50,
D,2,-,3,,'',, ,382847,25.92,
D,3, ,5,,'',, ,98765430,32.89,

I need to add an "H," to the beginning of the first line in the file, and a "D," to the beginning of all subsequent lines in the file, and save off as another file name.  I don't know the best way to do this.  I'm a newbie at this and would appreciate any help you can provide.  