[Bjolletts]

What times are we talking about ?
Not a LW user myself so I cant give specific answers ...
Lightwaves renderengine has alot of nice settings to play with ... did you enalbe radiosity, lighttracing, GI or any advanced lighting features, those will make you rendertimes increase alot ?

Is antialiasing 9 high for LW ? I would guess that's what makes it slower then ..

When rendering my 288 GTO (3dsmax, Brazil) I had rendertimes around 1 hour to 1,5 hour per image ... and that was pretty fast.

Videocard type dont matter when rendering, its just processor and RAM work.