I was just wondering, I see some webhosts offer additional domains or subdomains to be hosted from a subdirectory of one hosting account. I assume this is done with some sort of script, anyone have examples of scripts that web hosts use or where they can be found??

Example: Olm.net offers a CGI based solution, but where can these types of scripts be found or purchased, are they developed by the host themselves?? Here is Olm's description link for Domain Redirection http://olm.net/pages/features/redirection.html

Just some examples:
http://www.hotscripts.com/PHP/Scripts_and_Programs/Redirection/URL_Based/
http://www.hotscripts.com/Perl/Scripts_and_Programs/Redirection/

Yes there are some companies that offer to "point" domain names to sub-directories, in fact there are independant companies that specialize in pointing domains to subdirectories, i.e. www.internetters.net

There are also companies that will allow you to split your hosted disk space into separate domain accounts, if that's easier.

Good luck!
Rob.