Yeah. I need to know
Whether you are using the Windows, Linux, Amiga or Be port of Basilisk II along with the version of the host OS (Windows 98, Mandrake 9.1, etc.)?
Whether you are using Ethernet or the Windows NAT\Router?
If using Ethernet, are you using a proxy server or do you have an extra IP address given to you by your ISP?
Which Mac OS are you using?
Which ROM checksum are you using?
What are the contents of your BasiliskII_prefs file?
And I'll probably need to know the settings in your TCP/IP and AppleTalk control panels along with which version of Open Transport you are using.