On my recent project we were using ItemAdded event to send custom emails to Tasks assigned by a SharePoint workflow. One requirement was the ability to reassign the Task if required.

To do this I had to Check the "Assigned To" property and then reassign if required.. Having had trouble with beforeProperties and afterProperties I googled for it and came across this wonderful link:

http://www.synergyonline.com/blog/blog-moss/Lists/Posts/Post.aspx?ID=25 definitely a good read that will save anyone a lot of pain J

HTH,

Hari