Useful Sharepoint Designer Custom Workflow Activities

http://www.codeplex.com/SPDActivities

Add Websphere node to windows service

http://www.websphere-world.com/modules.php?name=Forums&file=viewtopic&t=1024

Moving Sharepoint List item to another Sharepoint List

http://blog.henryong.com/2008/01/21/how-to-movemigrate-sharepoint-list-itemsdocuments-and-preserve-metadata-properties-at-the-same-time/

Specifying Security the right way in a web part

http://www.dotnettipoftheday.com/Blog.aspx?Id=367

Apply color coding to your SharePoint lists

http://pathtosharepoint.wordpress.com/2008/09/01/apply-color-coding-to-your-sharepoint-lists/

Serivce Locator Design Patterns

http://msdn.microsoft.com/en-us/library/cc707905.aspx

Displaying List Attachments in Custom List Forms

http://www.sharepointu.com/maartene/archive/2008/06/18/displaying-list-attachments-in-custom-list-forms.aspx