So maybe its same for you (checking processor thing... )
I was reciving same error as you.
Now, on new computer, Ive already tried this game... and Im able to say that to you... You should be happy that you are not able to play it, its not worth any second spend on it.
Minimum System Requirements
Windows 98/ME/2000/XP
AMD Athlon 800 MHz or Intel Pentium® III 800 MHz
256 MB RAM
1 GB available HDD space
GeForce Series 4 video card
16-bit sound card
Broadband Internet connection
Keyboard and mouse
These are the minimum system requirments and as you can see it says 800Mhz required