I know there is a HUGE amount of people that have FO3 crash on them but i just wanna make sure it isn't my video card that is causing my game to crash 24/7.

I have an ATI Mobility Radeon HD 5470. I have tried everything to fix the crashes but nothing seems to help.

Nope it should run the game fine at about medium settings.
Post a dxdiag.
XP: Go to Start->run, type “dxdiag” and hit enter. Click the Save All Information button near the bottom right. This will save a Dxdiag.txt in C:\ by default. Then open the dxdiag.txt and copy/paste the information into your post.

VISTA/Windows 7: Go to Start->Search, type “dxdiag” and hit enter, click the Save All Information button near the bottom right. This will save a Dxdiag.txt in C:\ by default. Then open the dxdiag.txt and copy/paste the information into your post.

Yep you are right it isn't the card. I fixed it though >>> http://www.pdsys.org/blog/post/2009/02/07/Fallout-3-VideoDisplay-Freezes-sound-keeps-going.aspx