You can use wget for windows.

It is part of the unix utils for windows.
http://unxutils.sourceforge.net/

I find myself using them constantly. Add them to your path for easier use.

Or, if you want something with a gui... I really like httrack.
Its a website copier. You can specify what types of content you want to download... so if you want to only grab files with .pdf you can.

http://www.httrack.com/

If you use firefox... get the extesion "download them all"
https://addons.mozilla.org/extension...cation=firefox