Digital BW, The Print

I own an epson 2100 and want to print using QTR. I tried installing 
the windows XP version, but the installation woudln't even copy the 
files over to the folders created. 
I also have a Apple Powerbook, and could install QTR on that. Can 
anyone tell me if the installation and subsequent use is easier on 
Windows or Apple OSX ?

Many thanks in advance,
Andrew