You need the HP 4670 flat bed scanner - not available in Aus anymore but is still for sale in NZ. new these go for $400, but they come up on Ebay and sell between $100 - $200.
 I got mine on Ebay - was listed wrong as 4600 ( but is actually correct) scanner and so got by the radar of everyone else chasing these babies.

Scanner is a seperatable fold out - you can remove the actual scanner and place dead flat on a surface. It scans without any blurring - ive blown my scans right up to 100X and still no blurring - awesome stuff.
 The stitching software it comes with is crap - so youll need another.
  I have mine attached to a laptop and so can travel and scan - so watch out if im coming to visit - ill have  my "briefcase" with me!