Too many vertices?

Sculptris is the baby brother of ZBrush, both made by Pixologic. They both will get you up to a million polys if you let them.

Show me a picture of what you are trying to make, and I will get you a low poly version you can import. I use Blender and Wings 3D. I also have Sculptris, but I don't use it much anymore since I have gotten better at Blender, which has gotten better at sculpting.

If I had a nickle for ever time a woman told me to get lost, I could buy Manhattan.