Saving a PDF for web

Hi,
this is not exactly a flash question but I hope someone will be able to help.

I want to link a pdf copy of my portfolio for easy printing on my website. The only way I know how to save is save as .pdf through Illustrator. But I dont know how to save it a multiple pages.
If I have three pages and make the document 33 in long with tile full paages in illustartor, when it’s a pdf, it makes everything one page that’s 33 inches long. I need 3 pages that are 11 inches long.

Please help!