The Sysop requires downloading of a registration form for access to this
system. This door is designed to help you download those registration
files. You will be prompted to select which download protocol you wish
to use, and be asked if you still wish to continue. If the sysop has
configured his system that way, you'll be upgraded to a higher
status once you have successfully downloaded the application file.

Just follow the prompts. You'll be asked to select a transfer protocol,
and then be asked once more to confirm that you wish to receive the files
necessary for registration on this system.  It's all very simple.

After you confirm that you wish to receive the file, the download
will begin, using the protocol you selected. Simply do whatever your
terminal program requires to accept the transfer on your end.