Well HDMI are the standard cable it seems like nowadays for flat screen TVs but depending on if your laptop actually has the input for one....DVI is probably a little more standard for what you want to do (....at least, I think it is)
If you have an HDMI port on your laptop then its extremely easy to set up.
DVI (Top) /HDMI (Bottom)
But apparently I just learned a lesson myself that you can buy a DVI-HDMI cable which I did not know actually existed. It all just depends on what outputs your laptop/computer/device has.