<p>The issue with wireless is that, because it does not require a radio licence, the transmission power is required to be very low, were talking something like .1w, in a radio band that is pretty crowded. The wireless microphones are in that band, baby monitors, WIFI, wireless phones, and a whole host of other radio gizmos are in that band. Along with all the computer based tech. that is putting out RFI in the same frequency range. Then there are pagers, pagers seem to use every radio band every invented, and seem to put out an incredible amount of power. Even though there are only about 10 people left on the planet who don't have a cell phone, there are still seem to be a gazillion pagers out there. If a pager steps on the TV while your watching Benny Hinn, it's not a big deal. If a pager tower which puts out about 1500w steps on your projection, it's going to take your wireless projector about a minute to get back in sync. That is forever, during some parts of a service.</p><p>Unless there are technical reasons for not running wires, such as a building where wires can't be run, your far better to run a wired connection, if it's less then 30m (100') a VGA cable is your cheapest bet, just remember that the closer you get to that 30m, the higher the quality of cable you need. </p>