Where could I find a new LCD screen

I would watch eBay, or call a camera repair shop. Many shops will simply sell you the parts, but they won't warranty them if you do the installation yourself.

my pentax digital optio wp,has no picture in thescreen, when I go to take picture the screen is black and I can't see anything on the screen even if someone or the thing I want to take a picture of his right there in front of my eyes,but when i look to take the picture they or it is not there in the screen shot to take the picture