Role-Based Templates for SharePoint My Sites

“Role-Based Templates for SharePoint My Sites are custom templates, designed for Office SharePoint Server 2007 and the My Site functionality, and tailored to address the unique needs and requirements of specific roles within an organization.”

http://office.microsoft.com/en-us/sharepointserver/HA102147321033.aspx#1

SharePoint Application Images

By Default, located here: C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\IMAGES