SharePoint Products and Technologies Templates: Web Part Templates for Visual Studio .NET

Use these templates to create Web Part libraries containing Web Parts and Tool Parts for Windows SharePoint Services.

http://www.microsoft.com/downloads/details.aspx?familyid=CAC3E0D2-BEC1-494C-A74E-75936B88E3B5&displaylang=en

Windows SharePoint Services 3.0 Tools: Visual Studio 2005 Extensions, Version 1.1

(Visual Studio 2005 extensions for Windows SharePoint Services 3.0, version 1.1)
Tools for developing custom SharePoint applications: Visual Studio project templates for Web Parts, site definitions, and list definitions; and a stand-alone utility program, the SharePoint Solution Generator. Please also download the User Guide and Samples listed in Related Resources.

http://www.microsoft.com/downloads/details.aspx?familyid=3E1DCCCD-1CCA-433A-BB4D-97B96BF7AB63&displaylang=en

SharePoint Server 2007 SDK: Software Development Kit

The Microsoft Office SharePoint Server 2007 SDK contains conceptual overviews, “How Do I…?” programming tasks, developer tools, code samples, references, and an Enterprise Content Management (ECM) starter kit to guide you in developing solutions based on Microsoft Office SharePoint Server 2007.

http://www.microsoft.com/downloads/details.aspx?familyid=6D94E307-67D9-41AC-B2D6-0074D6286FA9&displaylang=en

Customizing MOSS 2007 My Sites within the enterprise

Modifying the private My Site is where things begin to work differently. In SPS 2003, a site administrator could go into his or her private site, edit the home page in Shared mode, and save their changes. This would update the layout and web parts for all My Site users, so everyone’s private site would have the same layout and web parts. In MOSS 2007, this is no longer possible – there are a number of more powerful customization tools than what SPS 2003 had, but some tasks such as customizing all private sites have unfortunately become a bit more difficult. So, how can you customize the private My Sites in MOSS 2007?

http://blogs.msdn.com/sharepoint/archive/2007/03/22/customizing-moss-2007-my-sites-within-the-enterprise.aspx#8926088