Active Directory and Windows Domain configuration

Hi,

I'm a bit new in this scene so be kind to me... (he he)

I have two questions:

1.)

In the process of installing Exchange 2k, the following message comes up.

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The component "Microsoft Exchange Forest Preparation" cannot be assigned the action "ForestPrep" because:
- Setup is unable to access the Windows 2000 Active Directory
- Failed to look up the Windows 2000 domain to which this computer belongs. Please verify that your computer is in a Windows 2000 domain.

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Does the above-mentioned error message mean that I have to change from Workgroup to Domain? I have set up my server to host ftp and http so far, would the Windows Domain have anything to do with a public domain? (I assume not, as I recon the Windows domain is controling users...)


2.)
The main page of the "Configure your server" wizard points me to "Configure Remote Installation Services" in the "Add/Remove Windows Components" section. There, I can "Configure" the "Configure Remote Installation Services". But by doing so, the following error message comes up.

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Domain Unavailable

Remote Installation Services setup cannot obtain information from a domain controller. Either the domain controller is not available, the current user does not have permission to access the domain, or this computer is not a member server in the domain.

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I assume that both errors, 1.) and 2.) are caused by the same problem? As I haven't done this before, I'd greatly appreciate detailed help, for ye shall be rewarded handsomely.