I microwave them the same as regular white potatoes.  Scrub the skins clean, cut off any bad blemishes.  Prick several times with the tip of a pointy knife.  Microwave on high 3 minutes.  Check them...if they're soft and squishy, they're done.  If not, go another minute or two and check again.  Keep going until they're done.  I do 3-4 at a time like this.  So easy.  So yummy.

Similiar to Stephanie, I micro like white potates. Scrub skin clean in water. Poke a couple of holes with fork or knife. Use papertowel to surround damp salted potato. Micro on high for 5 min --check--remove or cook longer. Should be soft to touch.