from the listing of my graphics card below can i improve it

all you can do is probably download the latest drivers to make it stable and improve the proformance @ http://nvidia.com and the latest directX @ http://microsoft.com or just buy a new videocard. Oh ya you can also Overclock it, learn it here http://www.sysopt.com/articles/VCOGuide/. But beware, if you overclock it for a long time the card will get VERY hot, even fry up