WP plug-ins are just executed when the page is viewed by a user, so you would be better off to have something external that runs on a schedule and inserts directly into the WP database.
Ahh I see now, thanks a lot Shawn, so I guess I can only install some external script and set up a cron job for it. *note to myself: should be smarter*
Also I have a plugin that allows you to post articles to your blog: http://www.articletrader.com/autopost/ not rss feeds, but might be usefull.
I have only played with the magpierss. I was using it to grab the 5 most recent posts from my blog and display them on the front page of my site. Still want to go further with it, but not the top priority on my list right now.
thanks a lot for help guys, I'll check out all this stuff. I'm surprised no one mentioned rss2blog though..
rss2blog is an option, however it is an expensive option another paid software if you are willing to pay for it is Auto Blog.
I use 2 plugins to do this on one of my blogs, there's the famous runPHP and then getRSS, both available at http://www.wp-plugins.net. runPHP allows you to insert PHP code into your pages and posts, so I turn that on, then I enter the PHP code to run getRSS and wah-lah! RSS in my pages