The filemaker branding is on the default webdirect start page, and represented by the favicon. Aside from the official page there is no "press kit" for webdirect that I know of.
You could always snag the icon for WD to drop on your layouts somewhere with a link to the above page.
Thank you Mike for your clarifications and the good idea.
I will nevertheless post a suggestion for a WebDirect "press kit" (i hadn't the correct word :-)