Here are the list of things you need to setup Dev environment for MOSS 2007
- Windows Server 2003 R2 Standard Edition
- Windows Server 2003 Service Pack 2
- Sql Server 2005 Developer Edition
- Sql Server 2005 Service Pack 2 (for the SharePoint / Reporting Services integration goodness)
- .Net Framework 2.0
- .Net Framework 3.0
- Microsoft Office SharePoint Server 2007 Enterprise/Standard Edition
- Visual Studion 2005 Professional Edition
- VS 2005 SP1
- Windows Workflow extension for VS 2005
- WSS 3.0 extension for VS 2005
- Sharepoint Server 2007 SDK
- Microsoft Office 2007
- VS 2005 office Tools for MS office 2007
If you want to read a detailed documentation , you can download 2007OfficeSetttingUpDevEnvironment
