what's wrong with my camera?

well we bought this sony cyber-shot dsc-w90 last april days before we are off for manila. from the beginning i noticed that my pictures comes out really grainy. but my husband stated maybe i did something on the settings that caused it to be really grainy. i am so disappointed since this is the newest cybershot camera and it's supposed to be 8.1 megapixels and fullHD pictures!! eh mas malinaw pa yata yung pictures from my old digital camera which is only 3.5 megapixels...

since we bought this from a camera store online, i don't know if i will be covered from the warranty. i went online to sony.com/support and they told me that my camera is still under warranty, but the thing is i need to send it to texas for repair....

hay naku what should i do? ang mahal pa naman nitong camera na ito compared to other point-and-shoot na cameras!!! eric just told me that before sending it to texas we will just try to bring it to a local camera repair place near us..

hopefully hindi naman na sayang ang money namin dito sa camera na ito!!!