In order to create a gadget for the sciverse platform, you need to understand the structure of the gadget xml file.  There are three main parts.

The Module Preferences section:
<ModulePrefs title=”MyAwesomeGadget” author_email=”you@your.domain”>

  </ModulePrefs>

The user preference section:

<UserPref name=”secureAuthtoken” datatype=”hidden” />

Then the Content sections.  You can have a content section for each type of integration point.  See here for info on integration points.  You can also combine integration point definitions by simply listing them  (i.e. view=”profile, canvas”)

  <Content type="html" view="profile">
  <![CDATA[
     <!-- The code for the view is here. -->
  ]]>
  </Content>

When all of this is combined, you will have the basic skeleton for a gadget:

<?xml version=”1.0″ encoding=”UTF-8″?>

<Module>
  <ModulePrefs title="MyAwesomeGadget" author_email="you@your.domain">

  </ModulePrefs>

  <UserPref name="secureAuthtoken" datatype="hidden" />

  <Content type="html" view="profile">
  <![CDATA[

    <!-- The code for the view is here. -->

  ]]>
  </Content>
</Module>