Forum Moderators: travelin cat
You can define the site in DW, then just use DW to "get" the entire site. Or you can use any old ftp program to download all the files, and then define the site in DW.
Be aware, though: If the site uses any FP extensions (webbot things) editing it in Dreamweaver will almost certainly break the FP extensions. If you're totally re-doing the site, you'll want to do away with any FP extensions and use standard protocols instead.
Oh, and after you download all the site files, make sure you dupe the entire site folder to have as a backup before you start messing with it.
I like FileZilla on the PC and Transmit on the Mac, but any old ftp program would do.
If you can get in with that, then it's a Dreamweaver issue. If not, then it's probably incorrect login info.
You might have your friend contact her host and have them re-send the e-mail with the site login info, then have her forward that to you.