If you do not want to have to program your application to handle conversion from html to pdf, then you can look at a web service offered by Gilgamesh Solutions at
http://gilgamesh-solutions.com/webservices.cfm. Using this service you will be able to send a URL to an html page you build on the fly on your server, and the service will actually crawl over your URL and convert your page to pdf!
You can control many options including footers, headers, page breaks, page orientation (landscape vs. portrait), include high quality images (png, jpg, gif). The beauty about this service is that you are able to control the format of your generated pdf using html tags!
If you have a coldfusion server, then you can actually buy the product for around $60 I believe. But you might want to go with the service option if you do not want to deal with installation, setting up your application, worrying about changing your application when you upgrade, if you use different languages and you want an application that is platform and web server independent.
Give it a try, I believe that they have test environments on their web site where you can try their products live for free.
