Disabled "Source Control"?

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From: Comet Developer (someone_at_microsoft.com)
Date: 02/24/04 

Date: Tue, 24 Feb 2004 10:09:59 +0200

Hi

I've just recently installed VS.NET 2003 (using a 60-day trial for now). The
options under File -> Source Control are all disabled. How do I go about
enabling these? What are the requirements?

Any help would be appreciated!

Thanks.