Yes, never have liquids near a computer.   I would let it dry for 48 hours, than look to ensure everything is dry. If it's water is should dry clean. If it's something else than water it might leave residue behind. What also helps is a can of compressed air. Blows the water off and get's rid of the dust.
Hi, I managed to spill some water onto my computer. Most of the water went down the side of the case. But some went inside. My computer was off and I have disconnected it from the wall and all other devices. I have opened the case and am letting it air dry. There are small drips of water on the motherboard. I'm going to let it dry for 24 to 48 hours. Anything else I should do?  Thanks Matthew.  [IMAGE]  
Aurora R12, wet