Run.bat is a batch file that calls the executable file called adb.exe. So if you're getting the error "adb is not recognized as an internal or external command, operable program or batch file" that means the adb.exe file is not in the same folder as run.bat. You need to extract the entire contents of the zip file into a folder on your PC. Then double-click the run.bat file. You need the Motorola drivers installed on your PC and USB Debugging enabled on your Bionic (under Applications > Development). I don't know how to make it any clearer, sorry.