Simple Brushes

I have recently been downloading brushes from http://www.1greeneye.net/brushes (.jbr format) and usually everything wors fine with winzip. Then earlier today I went ot go download some more and winzip opens but it makes me search for a zip file instead of unzipping from the certain brush set I have. Does anyone know why this is happening? Just for reference, today I was able to download like only 2 brush sets on that website.