Thanks guys i really appreciate your help in this time of need. I think there's a puddle of wee in my computer but im to scared to check.
You should probably check because having urine sit around isnt the best idea. Also, around pets you shouldnt leave your computer open. As for your cat I dont really know what is going on there.. Was you computer on when he was licking it? He could have gotten shocked, either way you may want to take him to the vet.
I agree with Moto, keep the PC off for a day or two than tur it back on, hopefully any moisture should be gone by then.