You can actually already accomplish this. While there isn't a page specifically for file downloads, there are a couple of possible solutions:
1. Create KB article that lists all files for download. This KB article should show up if someone searches for specific files or download paths from the main Portal page or from within the KB section itself.
2. Create a Community Category that has a list of files and/or utilities for download. That's what we've done. You can find our Category here: http://portal.smartertools.com/community/search.aspx?tagID=406&sortBy=0
I hope that helps.
Derek Curtis
COO
SmarterTools Inc.
www.smartertools.com