I use TV-One extenders - but on cat6 cable - seems to work better than some cheap cat5. specs: http://www.tvone.co.uk/cat5transpage.shtml
limit is about 300m at 1280x1024.

You wont find an HD VGA extender that works reliably over about 50m - use fibre, its not too expensive if you shop around. Think logical boxes are fairly reasonable (DVI and VGA) - theres loads out there..... I;ve just done a whole lot of research and still keep finding more....

Incidentally - The Lindy DVI cat 5 extender works great up to 1600x1200@60Hz and is quite cheap too. Theres an HDMI one on its way in about 6 months I've been told. Couldnt believe the price of this one either: http://videogame.brando.com.hk/prod_...?prod_id=00506

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