I'm scanning them in as 100dpi grayscale GIFs,
then I will convert to
other format(s) and eventually to PDF. Scanning directly to PDF with
HP's software produces horrible output with compression artifacts.
Please don't scan them at such a low resolution! 300dpi works pretty good.
I'd really recommend going out and buying Adobe Acrobat itself. I bought V5
and am very happy with it.
For an example of what can be done with Adobe Acrobat and an old 300dpi
scanner you might want to check the following:
ftp://zane.brouhaha.com/pub/hardware/WQESD.pdf
Rememeber at 100dpi you're going to be scanning at such a low resolution
that any prints will be basically worthless.
Zane