Ask IW UK Blog

UPDATE: The MSDN version of the 2007 Office system servers are now availabile via MSDN.  I can’t provide a link as it will be different for each MSDN subscriber but basically go to:

Manage Subscriptions

Subscriber Download and Product Keys,

Servers’ SharePoint (in left hand nav)

Office SharePoint server 2007

Office SharePoint Server 2007 Standard and Enterprise Editions English

From the SharePoint Team Blog. 

Installation Instructions

For WSS 3.0 refer to the Windows SharePoint Services in Windows Server 2003 site.

Installation guidance on Microsoft Office SharePoint 2007 refer to the following 

• Deployment guide
• Known Issues/ReadMe articles
• Upgrading to Microsoft Office SharePoint Server 2007
• Installing Microsoft Office SharePoint Server 2007 by Bill English (SharePoint MVP)

Build to Build Upgrade Resources

• "Upgrading from Office SharePoint Server 2007 Beta 2 Technical Refresh to Release Version": http://go.microsoft.com/fwlink/?LinkId=78039
• Step by Step Instructions (with Screenshots) Office SharePoint Services B2TR to Release by Shane Young (SharePoint MVP)
• "Upgrading from Windows SharePoint Services 3.0 Beta 2 Technical Refresh to Release Version": http://go.microsoft.com/fwlink/?LinkId=78040
• "Upgrading from Office Forms Server 2007 Beta 2 Technical Refresh to Release Version": http://go.microsoft.com/fwlink/?LinkId=78041

Version to Version Upgrade & Migration

• Upgrade to SharePoint Server 2007 (IT Pro) 
• Upgrade WSS 2.0 to WSS 3.0 (IT Pro)
• CMS 2002 to SharePoint Server 2007 (Developer)

Related Resources:

• Build to Build Supportability
• Version to Version Supported Paths
• Features comparison, Edition comparison, and Differences