Ok I found another plugin that does this same thing as widget context. It is called "display widgets" and it's working fine on my new site. For those who don't know, these two plugins let you select which pages you want each of your widgets to appear on. Combining one of these plugins with Atahualpa's ability to add widget areas virtually anywhere on the site and you have pretty much universal and complete control of the website.
You Atahualpa guys are the best! Thanks so much for this great theme. I have no idea why anyone would choose any other theme as a designer. I mean, check this out... I am using nextgen gallery to place a whole bunch of slideshow widgets (basically rotating images with a fade transition) into a new widget area in the header. Then I am using the "display widgets" plugin to select which slideshow will appear on which page of the site. Each page thus has a different set of rotating images in the header, above the page's content. Truly amazing!
Emanuel