Yeah, but really, winzip should have handled it for you. First try this: start the unzip operation again, but make sure you tell winzip to keep the folder structure intact (sorry, I can't remember what winzip actually says about that - I don't use it any more, winrar is so much better) and see if you get folders this time. You might have to look in "options" or "settings" or something to check on the folder structure setup - or it might even be called "paths".
If that doesn't work post back - but it's nearly midnight here, so I'll be off to bed pretty soon, might not see a postback until tomorrow. Hang tough, if all else fails I'll list the files and where they go and give you an addy for it tomorrow, okay?