This is my slide deck from the UK SharePoint user group session June 2007:
CustomizingSharePointTheSupportedWay_ChrisOBrien.pptx

And this is the sample code (Features etc.) for the presentation:
CustomizingSharePointCodeSamples_ChrisOBrien.zip

Any queries/feedback, please leave a comment at http://sharepointnutsandbolts.blogspot.com/

Cheers,

Chris.