GR390 keyboard

Well, it's finally happened I've got a problem with my keyboard.  To be
more precise a friend accidentally spilled a sugary liquid (root beer or
something) onto my keyboard (while it was on, oh joy).  So, a couple of
questions:

1)  Anyone know how to get the keyboard out of one of these things.  I
found someplace online that carries keyboards for my model and it shows
that there is a screw under the power, speaker grill (that also houses
the memstick port on the left).  I can't seem to figure out how to get
the dang grill off, any help would be appreciated.

2)  Anyone know if it's possible to just get the thing cleaned same as a
normal keyboard (day or too soak in soapy water, rinse and let dry for a
week method) or am I going to have to shell out for a keyboard.

or 3)  Should I try my luck at Sony support roulette?

TIA,
-Andy-