I dropped my phone into a glass of wine a couple of weeks ago and the same happened. I tried drying it out but although the screen lit up, there was no display.
I found a phone shop in the yellow pages that claim to repair mobiles that have been damaged by liquied. I took it in last week and if they can fix it, it will cost �35, if not, they don't charge. I haven't had it back yet so don't know if they were successful. May be worth looking through the yello pages to see if there is such a repair shop near you.