Maximum PC

I am running a Studio XPS Dell laptop using Vista. I spilled some soda on the keyboard and now the DVD control icons at the top of the Dell XPS L502X (Backlight) Keyboard (Play, Stop, Eject, Volume, etc.) have lost all function. They constantly enable themselves acting as though I've pressed them. The computer constantly changes volume on its own and their is no way I can keep a disc in the drive without the computer ejecting it automatically. Is there any way I can disable these buttons? Thanks.