The simplest solution would be to buy a new keyboard. I'm assuming that it's the one that came with your PC? You can pick up a cheap 107 Key (Standard) windows keyboard for around $10-$15US.
Beyond that, you can let it dry for a minimum of 24-48 hours standing up against a wall, with the short side of the keyboard touching the ground. I did that after my 2 year old dumped my morning coffee all over my Logitech G510, and 6 months later it still works like it did fresh out of the box (I gave it 72 hours to be safe)
PLEASE NOTE that if you fried circuits by plugging a wet board into your PC, the keyboard is now a paperweight. Drying it is only going to work if the circuitry is intact and the water/solution is only allowing electricity to pass onto unintended circuits.