I have yet to see a notebook which doesn't have some sort of video ouptut. Either 15-pin VGA, DVI, or HDMI - what product did you buy that has none of these connectors?
USB and wireless are DATA connections, not video. Video takes up more bandwidth in a format which is generally not accepted by displays and outboard adapters are mediocre in quality, at best.
If quality matters and you truly have no output on the laptop at all, then I would get a different laptop.
If quality doesn't matter, there are no direct projector solutions which work great, but you can find some outboard ethernet/usb solutions which would work okay.
You might want to consider an outboard USB graphics card as well, since that can be had with a 15-pin connection and probably will do a good job.http://sewelldirect.com/USB-to-DVI-External-Video-Card-High-Resolution.asp
It would take a compressed video/data feed and convert it to something which can be used over standard DVI or VGA as you want to.
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