I have once again madly fallen in love with Shaun Inman. He is a great designer. He is an even better coder. (I wish I could be so pragmatic as to write software with a lower reqs bound of PHP 4.2.3+ and MySQL 3.23+.) He has a sexy voice. – In one word, Shaun Inman is completely overpowered. So go watch the screencast and find yourself a fever.
Okay, to be honest: This is a tool for power users that, as all self-hosted aggregators do, more or less depends on access to cron to update your feeds. So figure it out on your own.