can't launch dld applications

[dirtyBob]

I can get mp3s to play just fine but every application I've downloaded can't open. I can get them unzipped and sitting on my desktop but from there out it's no such luck. I get the same message everytime: unable to open because you don't have the application that created the file.

Of course I dont! That's why I'm using limewire in the first place! Is there a way around this that will open shared applications?

thanks for helpin'

dB