I have a Dell Inc. Inspiron 530  and would like to upgrade some components. I have been advised to get two 1 GB stick of PC-2 6400: Part #: CT763013, but I have forgot the graphic card which I have to get as well. Can anyone help me to identify which graphic card I should get?

My computer functions perfectly well with what I need it for - but my Grandson stays every week-end and he likes to play PC Games on it. At the moment the games are "jerky" and I would like to upgrade my computer to help the lad with his games.

Advice would be appreciated many thanks.