codes should be somewhere on the LCD or the ribbon cable. I do Blackberry Repair in the Washington DC area
and I have yet to find a Blackberry I've taken apart and didn't find the part number of the LCD. I don't have them all memorized so I can't remember any more where the one for the 9700 is but it might be on the connector in tiny letters. Check the pictures of the spare parts from the website you're ordering from to see where the numbers are on the pictured part.