I have a Dell Latitude D610 (works like a charm). After several years of spilling coffee everywhere except for my notebook, this morning, I spilled it on the keyboard.
I disconnected the power supply and wiped all the water (coffee) from the keyboard. I opened up the notebook using screwdrivers from the next-door lab (My lab in Mechanical Engineering does not have the correct tools!).
As I switched it on, I could hear a very distinct humming coming from the display. This was unexpected because the entire display is a disassemblable (for the layman) assembly. I did not know of a way of opening it up!
Finally, after trying cold-shots from a hair dryer, etc., I used the age old cleaning technique. I wedged a thin paper into the gap between the screen and the assembly. It came out wet (not drenched). Two iterations, and my notebook is back to normal.
This process has cleaned up my notebook and the keyboard looks (and feels new).
I have to buy a new mug for my coffee now!