That motherboard requires an AGP interface for the Graphics/video card.
I don't know who you can get computer parts from in India but in the USA, Newegg.com is a great place to get them.
This is a link to about 40 different cards with the AGP interface on 2 pages. Newegg.com - Computer Hardware,Video Cards & Video Devices,Desktop Graphics / Video Cards
Compare them and make sure that you can connect to your monitor by either a HDMI or D-sub connection...
also check your existing card and check to see if it requires a low profile card to fit in the computer case.