If a domain has an IP scheme of 192.168.1.*, how would it
be possible to integrate an IP address of 192.168.4.*
seamlessly through active directory. Do I have to setup
a separate site or subnet object? What should the
gateway be?

Hello Barry,

If the same physical location has the two subnets, then there is no
additional configuration required for the
active directory to be configured.

If the 192.168.1.x subnet is in one location and the 192.168.4.x subnet is
in a remote location
and there is a link between the two locations, then it is better if you
configure Sites and Subnets
using this step by step article:

http://www.microsoft.com/windows2000...ry/adsites.asp

--
Regards,
Mohanchand Koduri [MSFT]

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"Barry" <(E-Mail Removed)> wrote in message
news:10ad601c3f4d5$e36b7e70$(E-Mail Removed)...
> If a domain has an IP scheme of 192.168.1.*, how would it
> be possible to integrate an IP address of 192.168.4.*
> seamlessly through active directory. Do I have to setup
> a separate site or subnet object? What should the
> gateway be?