Add images from a gallery into a slide

[Dileep]

Hello,
I created a Com-Add ins for PowerPoint 2007 using c#.net 2008 and
Add-in Express .I created a Ribbon tab and inside this tab,i have one Ribbon
gallery. Inside the ribbon gallery , I have 10 ribbon Tab items.The image of
each Ribbon tab item linked to Image list images.The image list has 10
images .The Images all are .jpg format.Now The gallery shows the 10 images
with Image list's image.No probelm. But i Want,
* if i select a particular image from gallery,That image should be
inserted into a PowerPoint slide

Please give me the Code for this Purpuse,It is very Urgently.

Thanks
Dileep.