Graphic card help required please !!!!!!?

Hi people i need so computer expert help :-) i am about to buy a new laptop it come with the perfect spec but i am not quite sure wgat this part means, is says it comes with a intel GMA X4500MHD graphics card but after it says it has 1277Mb shared momory what does this mean???? Also i need to no wether it will be caperble of playing a game which requires 32mb video card game?? Also i need no to what its max Mb would be for games and can u please tell me if you cam what direct X it is thanks so much this would be a great help :-)