(Above taken from website. © 2008 Microsoft Corporation. All rights reserved)
What you need to run it...
* Microsoft® XP SP2 (minimum), Windows® Vista® (recommended)
* PC with Intel Core 2 Duo processor with 2 gigahertz (GHz) or faster, recommended
* 1 gigabyte (GB) of RAM; 2 GB RAM recommended
* 3D accelerated card with 128 megabytes (MB) RAM; discrete graphics card with dedicated 256-MB VRAM recommended for higher performance
* 1 GB of available hard disk space; 10 GB recommended for off-line features and higher performance browsing
* XGA (1024 x 768) or higher resolution monitor
* Microsoft Mouse or compatible pointing and scrolling device
* Microsoft® DirectX® version 9.0c and .NET Framework 2.0
* Required for some features; Internet connection at 56 Kbps or higher through either an Internet service provider (ISP) or a network. Internet access might require a separate fee to an ISP; local or long-distance telephone charges might also apply
Mine run seamlessly, but I do have a 4 gig, dual core computer. But it is an amazing program.