i have dual core cpu with ecs motherboard which only supports up 2 quad core and i have a n vedia to 110 graphics card with 512 mb memory and 2gb ram and too hard discs each of 1tb
There might not be much you can do to upgrade, but again, the forum needs to see the actual specifications of your PC.
There are hundreds of dual core cpus, ECS make hundres of mother boards; all of these with different capabilities, sockets etc.
Need: Cpu brand and model number, mobo brand and model number, power supply brand and model number and if possible the power information from the label on the side of its case, RAM - quantity(I see it as 2GB), make, speed (as in 1333, 1600, 800 etc). With 2 1TB hard drive I would assume they are SATA drive, but you might want to post their make and model also. And lastly the brand of Nvidia 210 card or tell us if it came with the computer as an OEM part.
One more small thing, to help us here, might want to check your spelling etc. with the preview button, before posting.