The only other thing I can suggest is look up the manual and do a search for shadow... There are a number of settings you can include
at runtime.

What tutorial was it I will try this end and see how it looks on
my setup..

Windows XP SP3
Intel Dual Core CPU: E5200 @ 2.5GHz
4.00GB DDR3 Ram
ASUS P5G41T-M LX
PCIE x16 GeForce GTS 450 1Gb
SB Audigy 4
Spyware Doctor with AntiVirus