Force local policies

I'm far from being an IT guy, so excuse me if it sounds like I don't
know what I'm talking about. Anyway, as I understand it, a computer on
a domain will always override local policies with domain policies, if
the policy exists on the domain. What I would like to achieve is to
allow users to add the XPe installation to a domain but still guarantee
enforcement of certain local policies. Does anybody know if there is
any way to achieve this? If not, perhaps this is something somebody
from Microsoft might want to take under consideration - it may not make
sense for a PC but for an embedded product it certainly does.

Also, if it isn't possible to ensure local policies are retained, can
anybody tell me how to disable the ability to add a system to a domain
without sacrificing other networking capabilities. Thanks in advance.

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