what's the worst that could happen? it's all ready dead any ways. just be sure after your done wait a few hours to let it dry out completely like 3-4. and don't for get to do the back of it. that's where i saw the most water stains on my mobo.
hope you get it working again. i know what it feels like to destroy a mobo cause of obliviousness. also it didnt ruin the proc or any thing pluged into it?