I am helping a friend merge several blogs done in Movable Type and PostNuke into a WordPress blog. Once all the old posts are imported, I want to have a message about these imported posts show on all archive pages within that date range (like 9/1/2003 to 5/24/2005), either in the sidebar, post meta data, wherever -- I'm not picky.
I know I need to use the conditional tags for dates, but don't exactly know how to work out the multiple conditionals.
Any assistance would be appreciated.