OK, so I have a site, let's call it #*$!xx.com. There is a sub-section of this site, which is really a site all it's own, because it encompasses so much info.
Anyway, when I'm building links, I plan to get links to #*$!xx.com, but I would also like to use a different domain name, let's call it yyyyy.com, which actually redirects to the sub-section of #*$!xx.com. The reason for doing this is that the domain name of the main site does not have the link appeal that the domain name for the sub-section would have.
The question is, what is a search-engine friendly way to redirect all links coming to yyyyy.com to #*$!xx.com/yyyyy and still gain the proper link benefit?
A 301 redirect is the method you are looking for - it can be implemented a number of different ways, depending on your web server setup. A google search for "301 redirect .htaccess", "301 redirect php", or "301 redirect httpd.conf" will likely put you on the right path -