Connecting Windows 2000 Pro to Windows ME

I currently have three computers connected to this modem router:

http://www.ebuyer.com/customer/products/index.html?action=c2hvd19wcm9kdWN0X292ZXJ2aWV3&product_uid=48449

The router is in my room and is connected by USB to my PC. The other two computers are located outside of my room and are connected to the router by network cable. Everything works fine as far as the Internet is concerned, as all three computers are able to use the web at the same time - but what if I wanted to share files?

I have made sure that I've enabled 'File and Printer Sharing' in the Network settings from the Control Panel, and I've even set up a shared folder with some stuff in it, but even though my brothers PC can see my computer on the Network Places, it cannot browse any files yet because an error message is generated after trying to access them.

I'm using Windows 2000, my brother (who's PC I'm trying to connect at the moment) uses Windows ME. My dad's is Windows 98, but its not that important to connect that one.


Cheers in advance.

Not to worry everyone, seemed to be ZoneAlarms fault.