hey there - I have the same unit and ran in the exact same problem.
Mine was setup on a completely different network (although it was brand new).
Anyway, here's your fix:
1. Download:
http://download.cnet.com/Angry-IP-Scanner/3000-2085_4-10045978.html2. No need for extraction, you can run it from your OS directly. (you may need to download JAVA - if you don't have it, it'll prompt you to do so)
3. type in the IP range: from 192.168.0.1 to 192.168.1.254
4. It'll take a few minute but it'll find it.
5. Setup your computer with a compatible IP, 192.168.1.XXX or 192.168.0.XXX depending on the IP the miner was using.
6. Browse to the miner IP
7. Go to the Network tab, then the Interface sub tab, then click Edit
8. Adjust the network config to match your router
9. Click Save and Apply - close browser.
10. It'll restart the unit - while it does reset up your computer network adapter to your original settings
11. restart your web browser, browse to the new miner IP
12. setup your pool configuration: Status tab, CGminer configuration sub tab
13. save and apply
14. profit