What we have here sir is a failure to communicate.
Anyway, lets be a nice alien today then. ( altough you almost got me flaming again with that "you cannot stop know", try "asking" people in stead of "ordering around", works a lot better, it's that i had a good laugh at it, so i'm mellow enough again )
Read this, it's exactly the same pc i believe ; http://www.tomshardware.co.uk/forum/302983-15-best-opengl-graphics-card-dell-vostro-slim
Malmental has a good advice for some video cards.
That's all i wanne do, so read and enlighten yourself.