(Noob Question) Where are my Props?

So I'm sure this is probably going to end up being a REALLY easy question to answer, but I've searched through the forums and the VDC to no avail -- I'm guessing it's just an issue of not knowing what to search for.

Anyway -- when I create an entity and change it to a prop_static type, I'm not able to see any models in the "World Model" browser. A small handful come up, but they're not stock props like I want...they're all from various custom themes that I've picked up here and there while playing (e.g. when I click props_pipes, props_nucleus, props_nightfall, et. all, the sub-file browser says "No .mdl files"). I'm not looking to do anything too complicated with it. I kind of just decided to make a "junk yard" themed dm map to start myself off, so I basically just have some displaced terrain that I'm scattering various props around for cover and the like.

Thanks for any help! I'm sure it's just going to be a matter of me checking a box or something.

The Mod Filter box has 3 instances of HL2 and 2 instances of TF. I tried both TF instances and got the same result, and changing it to All Mods doesn't give me much more variety anyway (in fact, I think the only difference is that now I just get a handful of HL2 props).

Bleeeech, yup -- it was a stupid fix alright. I had "tf" in my filters from when I was futzing around trying to get it to work. Thanks so much for the dumb version, Dr. Element. I appreciate it!

Woo!!!