Variable Header Image at Timed Intervals?

what sort or intervals? seconds or hours/days

if seconds you need to replace the header image with a slideshow, if hours or days you need something to show a specific image at a specific time

each has a different soution

in that case you need a slideshow plugin – you’d use a slide show plugin such as wp cycle or meteor slides and replace the code for the existing header image in your theme with the include code for the slideshow given in its documentation.

I’ve not used 2010 weaver, but I’ve added the 2010-weaver tag to this thread. Hopefully someone who uses that theme or the author will reply with some tips specific to that theme.