Free Sitesucker Equivalent (for Vista)?

Ok, so, I recently discovered this wonderful application for Mac's called "Sitesucker." Basically, it downloads entire websites, or specific web pages, and allows off-web browsing. It's really nice, because it keeps the links on the pages, meaning that you can just click on a link, and it will automatically open up the page (if it was also downloaded).

I've been searching for a PC equivalent, but the ones I've found either require payment, or don't necessarily appear to work. I've also been afraid to download any "free, equivalent" programs I've found, as I don't want to risk getting a virus/trojan/worm/etc.

So, basically does anyone know of a free alternative to site-sucker that works about the same way, and can be used on PC's, specificaly Vista OS?
Thanks!

Have you tried this one?

http://www.httrack.com/

The traditional tool for this has been called wget.

Thanks, I'll be taking a look at both of those!

Wget (*nix and windows) if you are used to command line things. I remember using a program in windows called teleport-pro LOTS of years ago too.