1st off: Drop the caps. You do not need to yell at me to get your point across. It's downright annoying.
2nd: Generally laptops that have integrated graphics don't have upgrade paths for the GPU. Very few laptops with dedicated cards have upgrade paths for that matter. The best way to find out is to contact Toshiba, but I'm pretty sure you are out of luck.
3rd: Don't put your email address in your post unless you want your inbox flooded with a million spam messages about Viagra, Cialis and 60 other medications you probably don't need.