Instead of downloading extra softwarem just use your current pdf writer as a printer. For the webpage you want to save:
1) select print
2) select your pdf writer as the "printer"
3) save your file as a pdf

very simple.

If you want to "preserve" the "look" of a webpage hit "print" directly from the webpage; however, if you want a more quality document (eg. of an information source) select the webpage's "print" option that will send you to a more visually pleasing option. Then choose your pdf writer.

Good luck!

eric,
appreciated the link.

i did run into trouble when i tried to make a PDF of a 'https' document. any word about weather the program will be updated to include that feature?