I am sure someone here has the time to explain it to ya.. there are multiple people more than qualified. It's really very easy stuff at the command line. I wish I had more time, sorry. If I do get more time, I'll try to help. It is doable though, and easier than you think.
If you have multiple files to work on, a BATCH file with a file based loop will work great. There are plenty of BATCH experts here I'm sure.