Save this file to a temp folder then use Windows Explorer to locate and double-click to start the extraction process. Accept the default unzip folde and click the UNZIP button. You will have 3 files
SC40_20_61a.exe is the Windows 98/ME driver and SC4020_3a.exe is the Status Monitor. Install the printer drive first, then install the Status Monitor software. A 3rd file is readme.txt showing where the files were downloaded from and what their for.