[EHaskins]

1. The check sum is a CRC32 with 4 empty padding bytes preceding 4 bytes of check sum. I'm not familiar with CRC calculations so you'll have to do your own research on how to implement that.

2. If your network is NOT in using the 10.x.x.x address block it may work out of the box. You can determine this by finding the IP address of any of the computers on the network. The IP will either start with 10. or 172. if its 10.x.x.x it probably won't work.

Next you can try connecting the DS to the network, and then connecting a PC configured with the IP 10.x.y.6 to the network and trying to ping the DS(10.x.y.5) if you can ping the DS try moving the PC or DS to several locations in the building and testing it. If all of your tests succeed you can try connecting the robot to the network, and watching to determine if it can connect to the DS.

Keep in mind that even if this does "work" the school's IT department probably won't like it, and you could potentially cause issues with other parts of the network. In short, talk to your IT people, and hope they're willing to work with you.