I have not had any probs with CoolWebSearch - but one of my networked machines REFUSES to allow normal operation of Windows Update. The machine is running XP and delivers the "You must be an adminsitrator.... etc " message even when I am operating as an administrator!!!
I have tried disabling the firewall etc. No effect. I have been to the Microsoft help pages and have worked my way through all of the supposed fixes, including (carefully) those that involve bios changes. Nothing has worked. I stoically accept it as a fact of life. Actually what I do is run Windows Update on one of the other networked machines and make a note of the name/ number of the suggested update file. Then on the "other" machine I go to
www.microsoft.com, select 'downloads' and then enter the name/ number of the update file in the search box. From there I can download it ok.
Messy, but it works.