Delta Boy 777,
First you need to have an unzip program since FS downloads are zip files. I use Alladin's Stuffit unzip program which is a free download. Do that first.
Then go to one of the FS sites mentioned in this thread, find an aircraft you want, click on "download". The file will be downloaded into your "Download Files". At that point you activate your unzip program and then unzip the file. I have created a file called "FS stuff" and I unzip the downloaded file to that location so I can examine it and read the "read me" files. Then I copy the files to the right locations in FS2002. Aircraft are copied to "C:Progam Files/Microsoft Games/FS2002/Aircraft" and the guages are copied to "C:Program Files/...FS2002/Guages". C is my hard drive, your hard drive may have another letter.