While searching for the article on customizing forms etc. in Domino Web Access that was mentioned during one of the sessions at Lotusphere I found an article on customizing the look and feel of DWA. Just posting so I know where to find it…
Lotus developerWorks: Customizing the look and feel of Domino Web Access 6.5
Update (3 April 2006): I finally found the article (Manipulating data in Domino Web Access).