There is only one thing to download there...Total Commander.
It's just a question for which OS you're downloading.
To clearify this for future references: Total Commander is a two-panelled file manager, inbuilt archive reader/extractor, inbuilt FTP-manager, and (wait for it) a multi-file rename-tool, including automated counting. i.e. it is possible to simply select two hundred frames and tell it to rename them to frame [C].pcx, while [C] is a four-digit number starting at 0000 with an increment of 1 per file.
In other words: Perfect for SHP-building.