How many _websites are there?
Is the archive page made in VSD?
which version of VSD do you have?
Vista or XP?
from the archive page ( if I understand correctly ) you will have links linking to a certain month or year, so will they be linking to an html file or txt document?
In either case I would (from the archive page) link each one by clicking on " link to document" then VSD will automatically add those files and place them into the download folder that is located in the files folder, so there is nothing you need to do but link them.
In my opinion I would open VSD using the open website and choosing the vnu file, go thru every page and make sure everything is looks correct. Then I would minimize VSD delete all but 1 of the folders _website, though you should be able to tell which was the first
http://kellyinfo.com/web/vnuxample.jpg cause of the date.
when you delete do not empty the trash bin until your sure you can reopen the correct site.
When saving just click save and it will over write the vnu, without renaming, and it will place all the html files in it's folder again you have to do nothing at this point.
Hope I explained it right for you.