Age Of Empires III problem

I’ve installed AOE III it run fine until suddenlly it exits and "don’t send error"appears saying problem with Age3.exe, Please help.

My Specs:
Pentium Dual-Core CPU E5300 2.60 GHz
Intel G33/G31 Express Family Chipset (I have a PCL-express slot so i will buy a Graphic Card)
HDD 320 GB
Windows XP SP3

Buy a supported gfx card.