When you click the above link save the file. The computer will ask you where you want to save the file 'HADSS.EXE'. After the download is complete, double click the WEEDED.EXE file. This will excute an automatic unzip program, which will ask you where you want it to put the files (they can go wherever you want). After it has unzipped the files, click the 'Setup.exe' file, and it will install the updated version of WeedEd to your computer.