Creating sand dust particle for arid/desert scene

I've seem to hit a rut. I've checked out Epic's particle tutorials, which were really neat and I tried to get a sand dust particle going but utterly failed. I want to have some random sand dust particles whooshing on the ground or something to make the scene have more dust-ness in the air.

Appreciate any help or assistance on this, I'm not a great particles guy but I badly want to have some sand dust particles in my scene.