1. Download the psftp app from
   https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
   (most likely the 64-bit x86 version of psftp.exe),
   and save in c:\windows\system32 (or other folder in your computer's path).
   Only the one file psftp.exe is needed. This download needs to be done only once.
2. Open Windows command prompt:
   Using Windows Search (spyglass ) button on taskbar, search for cmd, and select Command Prompt
   The following commands are entered in the (black) Command Prompt window:
   1. Change to the folder containing the files to be transferred, e.g., cd c:\pictures
   2. Connect to host computer: psftp home117533535.1and1-data.host
   3. Login using username u37476601-ftp and pw uploads
   4. For list of psftp commands, type help
   5. Change to one of the unused folders (a, b, c, ...) on host, e.g., cd a
   6. Transfer your files to host: mput *.jpg and/or mput *.mp4 or put filename
      (* is the wild-card character that represents an arbitrary number of characters.)
   7. Quit your psftp session: quit
3. Close your Command Prompt window.
4. Notify me that files are there.

Rev. 12/07/2021