How can I create an "Alert" to pop-up stating that a caller has Active Incidents?

[#1]

Hello all!
I am looking for a way to create an "Alert" to pop-up stating that a caller has Active Incidents? We have an issue where several incidents are being created for the same issue in our Helpdesk. I am looking for a script that will check to see if the current caller has active or unresolved incidents. Would I do this through a script or Business rule. I have checked the wiki and community sites, but have not found a clear answer.

Any help on this would be greatly appreciated! And yes I am a rookie!

Thanks,

Paul

[ryadavalli]

I am trying to open a GlideDialogWindow when state field changes and point them to a record on another table. Once I edit the GlideDialogWindow, I want to setValue of the state field .