Normals Issue

I've purchased a number of models from varying sites and my usual method is import into blender, export to collada, import into torque. It's worked flawlessly up until a recent package of assets I bought from a site linked on here. Every asset in it seems to render only the backsides of vertices. If it helps they all came in .obj format.

I searched a bit but everyone seems to say either check off include normals in the export (can't find it) or try the recalculate or flip normals buttons. I've tried both, and neither seem to make a difference unless I'm using them wrong (no experience in blender at all other than import/export)

Here's a screenshot of the issue: