There is no fee to do this. If an insurance company declares a vehicle non-repairable, it must apply for a non-repairable certificate and submit the vehicles's salvage certificate or title within 15 days of payment of a claim. The insurer must also notify the DMV if an owner keeps a non-repairable vehicle.
Recommended Maximum Number of Users in a Group. For Windows 2000 Active Directory environments, the recommended maximum number of members in a group is 5,000. This recommendation is based on the number of concurrent atomic changes that can be committed in a single database transaction.
As far as the maximum number of devices goes: some consumer routers limit you to a 24-bit subnet mask, which limits you to 254 IP addresses on your local network. However, my DLink actually lets me edit the mask, so I could (in theory) use up to a class A network with a 10.x.x.x address.