if you downloaded exe files they would have been realdrums.exe made by forum users - to install user tracks I installed 7zip to make things easy
your user track folder will be in will be c:\bb\realtracks
if you are using an external drive go to it
right click on the usertracks folder located in the realtracks folder - send to desktop create shortcut
now when you double click on the downloaded user track zip or rar it will open in 7zip
now drag the user track folder out of 7zip onto the usertracks shortcut icon on your desktop this will extract the folder to your usertrask folder
now the newly downloaded user track will show in the user track picker window

macintosh and windows can both use user tracks with wav files

they can both use 7zip to extract the zip or rar files to the usertracks folder

http://www.7-zip.org/download.html