They work very well
But i cheaped out and used a Overhead projector

and seeing space invader on the big screen made me @#$%^& in my pants lol
they work very well but use a XGA monitor as you want high def quality otherwise it looks a bit blurry
i plugged in my Digital set top box to the 7.6" lcd (OEM LCD FOR $130

) and it was crystal clear compared to normal tv tuned in or even cable
I have some pics of the overhead projector in use but i can't be stuffed finding somewere to upload em.