[CentOS] How can I batch print html pages

I thought this was easy, but it turns out to be not so obvious.

My problem:
I have a database with hour registration. I need to print out about 
hundreds of pages and have them signed by employees. Of course I want to 
do this automatically. Up to now I have a collection of html pages (got 
them using wget). So the final thing I want is to print them all out in 
one go.

How to do that?

I search for a command-line option to convert the html to pdf. Or have 
firefox/konqueror print them directly without user intervention (there 
is not a switch like "firefox --print <url>"). Note that the pages are 
off-line, not on the server. The original pages can only retrieved with 
after authorization. That's why I used wget with a saved session cookie.

Anyone got an simple solution?

Thanks,
Theo