I have been buying, selling and repairing BB's for ages but for the first time i have hit a snag. In the past when ever i have needed a replacement part number the old part has always been present. Now i have just brought a BB Bold 9000 that needs a new screen but the old one is not present, can i find out the part number (as there are a couple of versions) and which screen i need without the old one and if so how do i do this.