Help with Banners

I think the banner.gif, jpg or whatever you have into the images directory. isnt the url to link the banner image to its site?

I have uploaded the latest version of dolphin as un ziped file and now what to be helped with how to unziped online. I saw that code to use but have failed, could you help me with how exactly am supposed to do it with show of examples?



{{{
unzip Dolphin-v.[1].6.0.0004-Free.zip Dolphin-v.X.X.zip
}}}

Your help will be hihly appreciated

Thanks

Ronnie