Michael, you may already be aware of these resources, but if not I thought I'd mention them here: the XPde Tools site offers many XP-styled utilities (Picture Viewer, Character Map, Paint, Minesweeper, etcetera...), desktop themes (Luna, Silver, etcetera...) and other components (too many to list!) for use with XPde, and these could possibly be included within your project as well.

The site is a tad slow, but still seems to be an excellent resource.

- M.