Any ideas how I can get this thing online or would it be worth the hassle to do so?
Every version of Mac OS from System 6 onward can connect to a LAN connection through DHCP, and this thing is probably running Mac OS 8.1, so here are the instuctions you'll need to get it on your home network:
1. Click on the Apple Menu, select Control Panel followed by TCP/IP to open the TCP/IP properties.
2. Ensure that the Connect Via option is set to Ethernet.
3. Ensure that the Configure: option is set to Using DHCP.
4. Ensure that the Search domains box is empty.
5. Close and Save changes within the TCP/IP properties box.
6. Reboot to ensure the settings stick.
If you're wanting to go wireless, be prepared to spend some money. This thing doesn't have an airport slot, you'll need to upgrade to Mac OS 8.6 (at least), and find a third party USB adapter than used the same chipset as the original cards (Lucent WaveLAN).