I think you need to treat a sprite as you would a transparent brush entity.
Basically treat a sprite as a func_wall that you want the blue not to show up on.
I dream of sexy.. err Environments and architecture - sometimes when i eat cheese i'll dream of falling asleep and jobabob's killer sheep. And Marzipanlol,
Keep in mind that if you do dream of the future, it is because your sub-consous mind is working faster than your concious mind, meaning that it will hit you when you are most tired. This may be why old phycics used the "Special Mushroom" to see their visions, and why they could only have them in the dark without the absense of sound.
Worldcraft dude, you are not alone. There are many with the unique ability of what I would call second sight. Most people just discard themselves as imagoning things. They are the crazy ones, not you.
No one cares.okay, fine guys, this is the last time I'll pester the vermin.