You have to be really careful where you buy your replacement cover from. I purchased from cellphoneshop.net, and the paint and stuff was chipping off within a few days. Do a good search and check out reviews before you buy. If you buy from Ebay, I would recommend to buy housing that is officially from Sony Ericsson. Good luck!
i agree too- definitely go for official sony ericsson products.. especially because some of the other covers are poorly made and don't fit as well.. this might let in moisture easier and damage the electronics in your phone (so i've been told)