Can I change my Nvidia 310M?

My Toshiba laptop is great in every way besides the graphics department. Is the 310M removable? I don't feel like voiding my warranty by searching around inside the case. I've already upgraded the HD... I hope that didn't void it. Anyways she's reaching a year old and the warranty will go away anyways so can I remove this card and what would be compatible with it's socket?