I create some stairs in Unwrap and import into Wings and they look screwy - why is this?

Also I want to turn these into a ramp i.e. the same shape but not steps but a smooth slope. How can I do this in Wings? Or is there a better program?

Also I want to turn these into a ramp i.e. the same shape but not steps but a smooth slope. How can I do this in Wings? Or is there a better program?