Welcome to TWC, pukemnukem.
It has been a very long time since I installed TATW, but I guess these files are still necessary, as they are mentioned in Gigantus' install instructions.
You don't need a dropbox account to download the files. Just click on the link and wait for the "download" button to appear at the upper right of the screen. Use that to actually download the file. You will need something to extract rar files being installed on your computer. Winrar or 7zip for instance, the latter is totally free.