Hi,
You need to open ZIP files, which are compressed to make them smaller, then use the contents
in the appropriate application - so if the contents are music or video then use WMP.
Compress and uncompress files (zip files)
http://windows.microsoft.com/en-US/windows-vista/Compress-and-uncompress-files-zip-files
Though Windows has built-in ZIP capability you might be more comfortable using a program
with more features (and works with many different types of compressed files).
7ZIP - Free
More information :
Using Windows Media Player
http://windows.microsoft.com/en-US/windows/help/windows-media-player/using
Getting started with Windows Media Player
http://windows.microsoft.com/en-US/windows-vista/Getting-started-with-Windows-Media-Player
Hope this helps and Happy Holidays!
Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle <- Mark Twain said it right.