Adding PDF to File Type output when scanning

Hi,
In XP, when I had HP's scanner software installed, i used to be able to scan to a pdf. The scanner (and printer) uses the Windows7 interface to manage this hardware, but now I'm not able to scan to a PDF - only BMP, JPEG, TIFF & PNG. I have adobe reader installed.
Is there a process to allows the scanner software to save as (or scan to) PDF..?
Please see attached image.
Any assistance would be appreciated.
Thanks
Andy

This program here will do the trick, reviews for it are outstanding as well

This program will do it also, and is free. Along with this program I've found this nifty tutorial for you

Have you looked at the HP web site ? I found a nice new Windows 7 64 bit version of the scanner software for my scanjet G3110 so I use it as I did before in XP. Also it supports my scanners features like the lamp for slide and negative scanning and the button for scan to PDF.