Ho.. sorry I an a beginner on this field... I want to buy a vga or video card for watching movies loaded in my computer on my TV screen.. so I want to know what is the difference between the VGA and The Video card.. my computer is pentium 4 so if I bought a 256 mb vga card or video card with 2048x1536 Max.Res. Is enough to get a clear stable picture on my 27 inch TV... please help me...