I'm having problems unzipping files using a Mac/Snow Leopard

I'm having problems unzipping these.

I'm sure the problem is on my end.

I use a password and it unzips the file, gives me an error box about corrupted pics then I get a folder full of jpg files. when I click on them it says the file cannot be displayed.

Anyone else using a Mac, with Snow Leopard and can suggest an unzipper that will work?

I'm using "The Unarchiver"

I use Zipeg without any problem.

Thanks will give it a shot

I use Stuffit Expander when the unarchiver doesn't work.

I also use Zipeg, never had any problems.