OK, I found a way of making the changes work on my computer (W2K-pro on IE6 SP1)
Download the attached file, edit the line witch say:
Search_Page=http://www.yourserver.com/cgi-bin/yabb/YaBB.pl?action=sidebar&type=IE
to whatever suites your setting/server.
rename the file to what ever you want but make the suffix ".ins", Run the file.
NB:
If this works you will first get a warning message about changing the comp's network settings, then you have to choose a "device" for the setting (witch does not mater), then you wil get a warning message that the new settings did not install correctly (this means that you did not install a new dialer) Then open IE and push the "Search" button.
NB2: You probably have to have admin rights on W2k, NT4 or XP to be allowed to do this...
I have not tested this on any other computer than mine, but it shuld be safe to run this on any computer, but do not alter any other field in this file, as it is a extremly powerful file on windows systems...