Accessing WordPress from a Different Directory.

thanks
not sure if that is quite what I need, I still want my blog content (main wordpress index file with news list) to be at http://www.website.com/blog but I just want to be able to list some post excerpts in my main homepage, is this possible?

Looks good, but I am having some trouble accessing my rss feed.
I am getting:
Warning: include_once(ABSPATHWPINC/rss.php) [function.include-once]: failed to open stream: No such file or directory in /home/site/public_html/test.php on line 127

Warning: include_once() [function.include]: Failed opening ‘ABSPATHWPINC/rss.php’ for inclusion (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/site/public_html/test.php on line 127