http://kmi.open.ac.uk/seminars/2982 Charting Collections of Connections in Social Media: Creating Maps and Measures with NodeXL This…
Here is a slide deck that describes major features of the NodeXL add-in for Excel 2007:
2009 Node XL Overview: Social Network Analysis in Excel 2007
More documentation is in the works. Please post questions to the Codeplex discussion board!