Since you installed "from scratch", you should post a link to the installation instructions you used (in case this is ever relevant to the question you are asking, but also in case someone else has a problem who used that set of instructions and you may have Answered a question inadvertently, helping out that other poor lost soul!
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Near the bottom of the Campaign modification screen, when in detail mode, there are some available options such as "dispo call url" and "start call url". These will pass information (without agent intervention or knowlege) to another web page.
Additionally, the Web Form (actually there are two of these, web form and web form two) which is closer to the top of the campaign detail view, can create the web form button on the agent's page which can be automatically brought up at the onset of a call (with another setting on the campaign) or activated when the agent pushes the button.
Further, you can use a script (which will show in the Script tab on the agent screen during a call) to send this information to the page AND show the page without bringing up a new window. This page also can be automatically brought up at the onset of a call.
Happy Hunting