The readme.txt is kind of useless. Follow what Download.bat is doing, although you don't really need to understand what the script is doing to use it. Extract and move contents from GUIDE.zip and jav-it_v1.7.3_windows.zip into a single folder. For cookies.txt use this extension for firefox. A little cookie should appear where extensions live. Log into R18 and go to library. Click on the cookie and export from R18.com, the middle one. If that one doesn't work try the top one, you know it fails because jav-it will close pretty quickly. Save and rename to cookies.txt, move file to the folder you put the other stuff. From here double clicking on Download.bat should work. Try downloading something from your library. If that works then you can use my script. Open notepad.exe. Copy and paste code into notepad. File > save as, type "downloadlist.bat" and save. Move the file to the folder with all the other stuff. Double clicking downloadlist.bat should start downloads. Script assumes you're downloading from R18 and grabs the CIDs from ids.txt. Once one file has finished downloading it starts the next until it goes through the entire list.