I have a old dell latitude d600 and some how it has deleted Microsoft Windows XP home edition by it self! I need help putting it back on I have the CD and Product Key and i don't know where to start. I also have one BIG problem my screen is cracked in the middle I cant read what it says in so parts, so if pics are available I NEED them. And I also cant use my mouse when trying to install it. WHAT TO DO.