Custom image buttons

[Mumin]

I used to be using UBB (thank GOD I switched). Anyway, I had a nice feature there that I would like to emulate in vBulletin.

I had a custom block, similar to the Smilies block. The block had different buttons describing the images and when a member clicked the button, it would insert the image into the post. I did it by making a modification to the template.

Since vBulletin is completely different than UBB, I have no idea how to do it. Any suggestions? By the way, I would like to include it below the message edit box and above the Post Icons block.