Trouble finishing installing Jailbreak. Please help

Ok, so I followed the whole tutorial on the page listed below, and I got to the very end, where you are supposed to run the "windows.bat" file to install Jailbreak on your phone now that you have 1.1.2. and the bat file will just open/blink and close very clickly everytime I try to open it. it is very annoying. I have read and tried to update my java, but I have done that as far as I know. I did oktoprep after I downgraded to 1.1.1 and went to jailbreakme.com

basically, I followed this tutorial:
http://www.touchdev.net/wiki/Jailbreak_1.1.2

Which goes a long with this video (that I followed):
http://youtube.com/watch?v=z1OElvveqhs

I would really like to get this to work. I can't figure out why I can't open the bat file. I have tried it on my computer, and then my dads. If there is an answer I would like to get it quick, or will I have to do all the steps again? is there another way of doing it and ending up in 1.1.2 a different way?
I heard that staying in 1.1.1 isn't as smooth.. Any help is GREATLY appreciated.

 

i did, that is one of the first steps. I converted back to 1.1.1, used jailbreakme.com, then installed oktoprep or w.e. then updated. I have fixed my previous problem,and now I can run the windows file, but everytime it looks for the phone it says it can't read it/ restart computer and plug it in again...

?

 

Problem solved. Thanks for helping everyone