an easier way to do combustible exploding barrels?

[poseyjmac]

i read this: http://www.hl2werld/wiki/index.php/Exploding_Barrels

you have to set up like 4 freakin entities to get it to work, and on top of that, none of them respawn till the whole set is destroyed.

whats up with that? anyone know how to make it so each exploding barrel respawns by itself? you would think you just set up a prop_physics_respawnable and thats that, but it won't catch on fire after it spawns