extracting files

ok for some reason i was abl to extractfiles but now ever seance i defraged my computer i can extract new file i just downloaded. can someone tell me what i have to do. or what i need?. here is a pic of it

 

do you have winzip installed?

 

no i dont. can u tell me what that is. or give me a link so i can download it?

 

google search winzip, install

 

Winrar

 

You can get Winrar from here: http://www.rarlab.com/

 

or winzip.. they like same

 

google search winzip. download. that cool dude has the link