Hi,
We have a new control that makes it easy to use NivoSlider. It will be in the next release of mojoPortal, or if you are using the latest source code it is available now.
Usage example:
<portal:NivoSlider ID="NivoSlider1" runat="server" ImageFolder='~/Data/Sites/1/nivoimages' ImageWidth='618px' />
You just point it to a folder with the images to use for slides. The images all need ot be the same size and you set the width to whatever the width of th eimages is.
Then you add one of these to style.config of your skin to add the needed CSS:
<file cssvpath="/Data/style/nivoslider/default/default.css" imagebasevpath="/Data/style/nivoslider/default/">none</file>
or
<file cssvpath="/Data/style/nivoslider/orman/orman.css" imagebasevpath="/Data/style/nivoslider/orman/">none</file>
or create your own CSS based on one of these.
So you could put the control in layout.master or you could make a simple CMS module and embed it in there.
Hope that helps,
Joe