Design View Does Not Work

["uknow-mav" <webforumsuser@xxxxxxxxxxxxxx>]

The design view of my DW CS3 version 9 on Mac OS X does not function. Normally 
I wouldn't care, but this problem prevents me from viewing/testing the 
design-time style sheets that I am required to build for end-users. I have 
tried remedies cited in various posts, but none help. I have tested the 
problem, by using the exact same files (pages and design-time css) on an 
install of MX2004 on another machine, and they all work fine from there. But I 
really don't want to use that other machine, or MX2004 for developing the 
design-time stylesheets. Please advise.