Specification of PC for Topicscape

What is the specification for a computer to run 3D Topicscape?

3D Topicscape should be used on a computer with . . .

• at least 256MB of RAM - more is desirable,
• at least a 1 GHz processor,
• a good graphics adapter purchased in the last year or so is a key requirement as Topicscape works in 3D.
• Your graphics adapter must support 3D (essential);
• the graphics adapter should have a minimum of 32MB RAM on board and
• it must have a driver installed that supports at least OpenGL '1.3' (this is equivalent to OpenGL 1.3) (essential). 3D Topicscape will not work with OpenGL 1.1 or 1.2 (i.e. without extensions).
• a screen displaying a resolution of at least 1024 x 768 3D Topicscape takes full advantage of higher resolutions if available and is spectacular on a screen with a resolution of 1900 x 1200 or similar.