not too difficult at all...depending on the manufacturer, look on the inside of the band. lt should have several links on both sides of the dial that have arrows on them. You'll need a very small awl or scribe. Wherever the arrow is, you simply push out the pin in the direction of the arrow with the awl. Push out another pin on the next link, depending on how short you need to make it. Try not to take more than one link from one side without taking one from the other, or clasp won't be centered properly and dial may not sit right, either. push the pin back in and you're done. Hope this helps.
Bill Gardner, February 2009
