Under your texarea (while typing), there are two tabs. One is "Options" the other is "Attachments".

@pmiller said:

Lewis,
Indeed many rendering apps can multi-thread, but my understanding is that no 3D modeling application does ...

I'm sure I saw a vid the other day demonstrating the capabilities of 3DSMax 9, which seemed to be using multiple processors as well as being 64 bit capable.

Thanks mate. Thats very helpful.

how about loading a complex model (with textures, transparent materials, sun activated, ...) and typing in Ruby Console Test.time_display