The Castle map was created in v1.002 but the screen shot was was taken in v1.003 using a Dual Core 1.6 CPU, Geforce 6600gt and Win XP.
Are you using the sliders to change the LOD? Also don't be afraid of using a little fog, it's great for creating a bit of atmosphere.
Don't forget about using the 'F' keys for fine tuning as well -
F1 Pre Bloom Boost
F2 Bloom Threshold
F3 Post Bloom
F4 Light Ray Factor
F5 Brightness
F6 Shadow Strength
I also noticed that M2Design's screen shots says it was created with v1.003.
HTH
/Sorry Rick if this is thread hijacking !