HELP! With Ghost recon Patch the new update patch

[whatajoke]

VLuka (10-02-2002 23:03):
Right-click on link then use Save Target As or use download manager like Flashget for example.

Thanks VLuka! I right-clicked and the file appears intact and in my GR folder...HOWEVER:
the file has the generic "Windows" logo, ("properties" says it's a "General" file), the title of the file is...

"Ghost_Recon_115_nocd.ace"

..what the heck is an "ace" file, and how do I execute this thing?

Many thanks for any/all help patience!