There are some examples here:
As always, there are many ways to go about this--using sheets, text objects, actions, image objects, etc. A dashboard is really just a variety of objects placed together, so your imagination can run wild, in terms of how to design a landing page.
It is relatively easy.
Create a dashboard (blank at the beginning, of course)
Add Text objects for the welcome note and other notes you want to add.
Add Image objects to add logo, and other decorations including pictures, etc.
Decorate the dashboard playing with tiled and floating object on the dashboard
Use dashboard actions to go to other dashboards in the workbook.
Be creative in order you landing page be nice, elegant and attract the interaction from the user.
I will try to find an example for you.
Examples provided by Matthew are very good to start. Even you have a short how-to tutorial in the first link.
Those are great works from TZM Steve Wexler.
I have created banner.html file and I am using it as weblink on my dashboard so it will display me banner image on the top of my dashboard. web-link is static (e.g. c:\banner\banner.html)
Now question is when I publish the chart what should I do so that I can see the banner.html from anywhere in my browser?
Currently when I publish with static-link. I am not able to see the banner from other clients browser.
Your approach require you publish your banner.html file to a web service accessible to Intenet.
Why not to add the banner to the dashboard as an Image. I think this is easier than your approach.