And anyone who wants more details on the SCCS in question can go out and buy a copy of Vincent Maraia's THE BUILD MASTER (http://www.amazon.com/Build-Master-Microsofts-Con figuration-Addison-Wesley/dp/0321332059) which talks about the challenges of SCCM on this scale in great detail, and how Microsoft has addressed them. You may not agree with all his conclusions, you may not like the products that come out of Microsoft, you may think that Microsoft's corporate polices are scummy - but that doesn't mean that your random little SVN repository is going to scale up to handle a project the size of Windows Vista.