I am considering purchasing a new lap top, and it doesn't have the HDMI - and I really have no idea if I need it. I'd like to have the capability of projection from my laptop for my photographs/presentations. Do I need the HDMI? I've searched the forum and saw what seems to be a solution (an extra cable for some applications, which I'm not sure I understood), but it also comes with warnings that it isn't really recommended. The laptop monitor is widescreen - is that a problem? I am illiterate when it comes to much of the connections, what is needed, what is good, what is bad....any help is appreciated - thank you!