Yes, this definately would be a lot easier to assess with a couple of photos. Without seeing it though, I can say you'll need to support the load above the wall somehow. A simple 4x4 braced across the ceiling with a couple of studs may be enough, or you may have to build a temporary wall to hod the weight while you work on it.
Depending on what's above it, may be a pretty heavy load or maybe not. Can you get us some photos, or at least a few more details? We need to know what's above it, what the roof stucture is, and anything else that may pertain to the project.