When you want to customize the default WSS Search box, this isn't too hard. It ships into the ContentLightUp feature, which contains a feature.xml and a searcharea.xml. In that searcharea.xml a reference to the searcharea.asxc exists. Because SharePoint works with delegates with searchboxes, all...
MOSS 2007 and WSS 3.0 are using the same search engine. It only differs in the options that are available to each of the products. As expected, MOSS 2007 has a lot more functionality then WSS 3.0. Where WSS 3.0 is only able to use contextual search (as in: this site, this list), MOSS 2007 can be configurated...