to use a program in command prompt, go to run, type in cmd and click enter, which will bring up command prompt if you do not have a direct shortcut to it (been a while since i used vista, not entirely sure if it is the same for it), then change your directory (if you are not in the correct location of your patch.bat) by typing
cd C:\wherever
wherever being the exact directory your file is in (if you copy the location, to paste it in you must right click and choose paste, you cannot use ctrl+v like normal pasting), and once you are in the same location as the patch.bat, just type in patch.bat (or whatever it's exact name is) then hit enter, and it should run, and will display everything that happened and what could have went wrong.