Help me binaries files

Hi!
I'm just discovering this marvelous site.
I have just downloaded some files wmw...
Unfortunately some appears after downloading on my screen as "binaries files" with an "Excel" icon.
I a 'm working with a system X Macintosh...
What can I do with these files?
Do I need a transcoder? Where can I find it?
Some files appears good and are working, others non...
Thanks for your help...

I use a Mac and recall having that problem only once. Check to see that StuffitExpander is correctly installed. That might be the problem. You can get the latest version direct from the Apple website. Hope that helps.

I'll try it..
Thank you...