Add custom image in Scorecard Alert (Dashboard design 4.0 Sp10)

Hi All,

We have limited images for Alerts in Scorecard. I did a lot of research but couldn't find a way to add a custom image. Do you know of any way to add a custom image for Alert  icon?

We will be upgrading to 4.2 in a few months. So if you know anything about this option in 4.2 then it will be great.

Thanks,

Siraj