First things first, you're going to get no where with an attitude like that.
As for your issue, iWeb publishes everything to a file called 'Domain' which is located in /Users/Name/Library/Application Support/iWeb, where 'Name' is your user account name.
The only way to edit iWeb content is to open this file in iWeb and make your changes before publishing to .Mac or your hosting provider.
So, no changes to an iWeb site cannot be carried out online without using iWeb. For what you want to achieve I would suggest emailing the 'Domain' file to your friends if they have a Mac, where they could then make the changes and publish them to the internet.
iWeb is designed to be very novice friendly, and you seem to require something a little more sophisticated.
David