My HP dv6 Artist Edition laptop handles anything in Trainz 06 with ease (2.3 GHz AMD Turion X2, 4 GB RAM, 1 GB ATI 4650, 500 GB 5400 RPM) suprisingly, and I couldn't be happier. I can even run Clovis 2 & Mopac with FPS in the upper teens as the lowest, average is 25-30. I wouldn't be suprised, though, if it struggled with 2009, even on the same routes.
My thoughts,
Kyle