guys~ where to go for claiming warranty from SIS?

my back cover seems lose. got sound when i press it. so can go sunway giza?

Not sure if anyone asked this before, but is it possible for me to change the storage for my camera from SD card to Internal memory?

My 2-months old Sensation i signed from Maxis, the Micro SD card suddenly went dead after i took a picture. Now the phone can't detect the SD card and when i put on the PC, i can see the folders but when i try to access the card, it will hang there and i can't even format the card using different software. Anyone encountered this before and does this mean it's already dead? So can i warranty claim the card from Maxis and anyone know how is the procedure, like do i need to give the whole phone set back to Maxis or they can just swap a new card for me immediately?

Besides that, damn tempted to upgrade to Sensation XE but not sure how much i can sell my current 100% scratchless and no-drop Sensation for before i even think of upgrading lol