As of Windows SharePoint Services 3.0 with Service Pack 1 (SP1), you can install Windows SharePoint Services 3.0 and Office SharePoint Server 2007 on Windows Server 2008. You cannot install Windows SharePoint Services 3.0 or Office SharePoint Server 2007 without service packs on Windows Server 2008.
If you have an existing installation of Windows SharePoint Services 3.0 or SharePoint Server 2007, see the Updates Resource Center for a roadmap to help you deploy SP1.
If you have not yet installed Windows SharePoint Services 3.0 or SharePoint Server 2007, you can install a version that already includes SP1:
Read how new features in Windows Server 2008 address important issues that face organizations that deploy Web solutions with SharePoint Products and Technologies in Advantages of deploying SharePoint Products and Technologies with Windows Server 2008.