Do you use Windows? Which one?
Up to and including Windows Vista...
After you download the file, double click on quilt.zip and select "extract all
files" then you will have a file quilt-msdos.exe and it should just work.
If you're using Windows 7, you can go do www.dosbox.com, click on
downloads, windows then you will have a program called dosbox.exe
Double click on that to install it. Then put the quilt-msdos.exe into
the dosbox and it will run.
If you have any problem, let me know and we'll try to help you.
We don't use Windows but if someone here has a C compiler and
would like to compile it to a native windows binary you could email
me the binary and my DH will put it on the webpage.