I need to migrate a number of documents from one sharepoint environmen to another.
One option is to use the Microsoft Spin and Spout Document Library Migration Tools
Another option might be to use the following 2 tools
To download the documents from SPS2003:
All About SharePoint : SharePoint Document Puller v4.0
And to upload them to MOSS 2007 using WSUploadService - A Web Service for uploading documents into SharePoint All About SharePoint : WSUploadService - Web Service for uploading documents into SharePoint