Can I get a clear picture from a laptop through a video switch to an XGA projector?
I'm running 2 laptops & a dvd through a video switch to 2 lcd monitors & an XGA projector. I've connected everything with svideo cables (not VGA). When I'm using the laptops my lcd's are perfectly clear but the projected image through the XGA is incredibly blurry. Note that if I run the laptops to the projector with VGA the picture is clear. Is it the projector itselft or is this an issue that can't be resolved?
Not with S-Video.
If you run the projector straight from the VGA port then you'll get a very clear image (because the VGA connector was designed to handle computer graphics, though it can start to have problems when you push past UXGA) but you'll never get a good image from a computer using the TV out feature (S-Video just can't transmit a very clear image).
If the projector can handle PAL and you're outputting NTSC then switching to PAL might give you better image quality (as PAL tends to transmit with 576 visible scan lines while NTSC only transmits 480) although even then it'll be crap (just a bit less crappy than NTSC).
A VGA matrix would probably be better (and use the projector input select to get S-Video for the DVD player).
A look at what is currently available on eBay
 TV out Switch Converter Box for PC VGA to TV Video RCA US $28.99 
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 USB PC MAC VGA to AV TV LCD Composite RCA S-Video Adapter Converter Switch Box US $14.99
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 nti vidmux vga video switch US $3.99
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