Ok, here's what to do:
Make a folder named CALLBK in the root of your hard drive. I used D: but I bet any would work.
Download qrz_cbc_xxxxxx.zip from
http://www.qrz.com/download. Unzip it into the CALLBK folder. You should have callbkc.dat, callbck.idx, and country.dat in your CALLBK folder.
Enable QRZ CD ROM (click the SETUP button in the Callbook form).
Enjoy!
73,
Dennis