From looking at this board there are a ton of problems when everyone is trying to load teh game. And it seems the common problem everyone is turning too is hardware and i don't think that is really the problem. Before u return the game update all drivers on ur computer. Update ur Video card drivers, ur motherboard drivers, update Windows, and update directx. Thats where i think the problem is and seems a lot of people are blaming the graphics card. My friend has integrated graphics, which is just plain terrible for gaming and it works on his computer. The game is not that graphics intensive. I think that if u have a P4 or AMD equivalent system with 256 MB of RAM(prefferibly more) your hardware is probably not the problem.
Update everything u can think of and then try to play the game again.
Update everything u can think of and then try to play the game again.