http://www.bigcamera.com.tw/catalog/catalog.htm
and
http://tw.user.bid.yahoo.com/tw/booth/weichen1021
these two are probably the most popular camera shops in Taipei for the recent several years.
Both are within walking distance from the Taipei MRT system.
:)
As a 1DsMk2 owner, the spec for 1DsMk3 is NOT attractive to me at all. I doubt anyone will be happy to spend 8kUSD on a crappy LCD and a not-so-reliable AF system (if canon puts the same mk3 AF in it), especially after seeing what Nikon has offerred. High resolution is definately a good thing...