You should be able to use a custom property to group the traps, then create an alert based on that custom property. This Node Grouping for alerts discusses this very topic. Hope this helps.
BTW, love your avatar. Falcor rules!
Thanks for the compliment on the Avatar!
While this isn't exactly the solution for what I am trying to accomplish it gave me some ideas on how to solve a different problem I was facing so it was still helpful.
I ended up figuring out my answer...
What I wanted was a way to seutp a single SNMP Trap Alert Rule that would capture all of the traps below a specified section in an SNMP MIB tree.
One example would be to trigger an alert on any of the Compaq traps which are typically things that I wanted to know about. I was able to accomplish this by specifying the first half of the condition to be "TrapEnterprise is equal to" followed by the specific enterprise I was interested in, Compaq in this case.
Below is a screenshot of the alert condition...
Thanks for posting the screenshot, Byron! Glad you got it figured out.