Download the self-unpacking executable file aladinSetup0.exe which can then be directly started. That file then installs the program kesa-aladin on your computer.
Click with the right mouse button on the diskette icon above and then on Save Target As. The best thing is to choose the desktop as target because that is the easiest way to find the file aladinSetup0.exe again.
The progress of the download process is displayed on your screen.