damm... no answer yet? i dont need this climb stuff but i have the same doubt... where it works?
Pretty sure the module has to be set up with certain areas you are able to climb.
Actually no, it works the same way as jump skill - the target location needs to be 5 feet up or down from your current location and in 10 feet range from your character. The DC is fixed and equals 25 ('A rough surface, such as a natural rock wall or a brick wall.').
You can use this ability to climb on city walls, cliffs etc.
