The writers of xolox may have chosen to disable it, but it's now alive and kicking.
First of all, you may well ned to reinstall the original. (I removed mine in a fit of temper).
You can find it via
www.tucows.com
or here
http://xenomorph.net/xlx/xolox112.exe
There is also a crack here, which re-enables it's download functions.
http://xenomorph.net/xlx/xdn_xolox.zip
All you have to do is unzip the file, and save it to program files\xolox - overwrite the original file.
I've tested it, it works...I also virus checked it using CA's Innoculate (dec 06 2001 update)