Specs to run Trainz Sim 12

[aliciah6481]

I am very interested in picking up the Trainz Simulator 12, but I'm not sure how much computer's specs match up with the specs listed on the website. I'm not super technically savvy; I don't want to make the mistake of buying something that won't work correctly

My Computer:

Dell Studio XPS 9100 w Windows 7
Processor: Intel Core i7 CP 930 @2.80GHZ
6GB RAM
900gb hardrive
Video Card: AMD RADEON HD 6670

Any help would be greatly appreciated!