I'm using Windows XP Pro SP2, and Shareaza V2.2.5.0.

I'm using the firewall is that included with Windows XP, but I thought I've configured it to allow Shareaza access to/from the internet?

I CAN download files (most of the time) using Shareaza for those sources that are NOT firewalled. But, as far as I can recall, firewalled sources result in files that are not downloadable!?

ISP is - paradise.net.nz