There are several solutions to the need to have a Pages gadget that indexes archive / label searches, and external URLs. Each solution has its advantages, and disadvantages.
If you want a Pages gadget for your blog, that indexes more than just static pages, you have two basic choices, with each choice having different possibilities.
- Replace the Pages gadget with a linklist. You can index any URLs that interest you, in a linklist.
- Use the Pages editor, in the New Blogger GUI, which lets you add URLs of your choice, directly to the Pages gadget.
If you look at the menu bar on this blog, you'll see how the active menu button "lights up" when selected. This feature is a CSS tweak, and requires that you use a linklist that's XML based. I created the menu bar here, using "Add a gadget", and tweaked the template code. The default Pages gadget is XML based - and does not require the latter tweak.
As an alternate, you could use the Pages editor in The New Blogger GUI - if you want to use The New GUI. If you use the New GUI Pages Editor, and you select the Pages gadget to "Show pages as" "Top tabs", your blog, when displayed using a dynamic template, will populate the black menu bar with your Pages list. When that happens, the dynamic view menu will be displayed as a drop-down list, at the far left of the menu bar.