OES, Licences and RedCarptet- reInstall?

Yohoo!

We've purchased an 100User OES. Some questions:

1. Is it right that we can install as many OES/Linux Server as we like?
2. Is it right, that we've purchased six (6) RedCarpet accounts for our
OES/Linux?
3. We've tested the first OES in our lab wirh OnlineUpdates (commandline
with *rug*)- now i want to reinstall the Server (inkludng a new CA and
everything). What about the RedCarpet account? Can I reuse it? How? Or
will it be kept?
4. Can I install a local Server for Updates, so our Servers (and later
the NLD-Clients) can use the local Server instead of getting all from
the internet? Is there any howto?
5. How ist the user-limit working?

THX in advance for your help.

Christian Völker
SCLT