no not a .jad file that must be opened from you're bb browser
for example email yourself the link from you're e-mail click on the link and it should open the bb browser hit go. it wont work dowmloading it on your desktop and putting it in dm.
find the links again and either type them in the browser or e-mail the link to yourself when its in the browser on you're bberry it should ask you to download then say sucessfully installed and will most likly end up in you're download or app folder.
yea unfortunatly i dont even think you can find the entire link in what you put on your desktop. It most likly will only give you the file name and not the site it originated from . So to answer you're question, yes everything you put on the desktop is useless. but if you can remember what site you got them from you can atleast see the name on what you downloaded and it should make you're search a little easier