The VW Sandbox application has several requriements. This page will test for support of both optional and required features. Some of the tests can be done automatically, but please click each button on your mouse in turn, and roll the mouse wheel.
Webgl:
Untested
Floating Point Textures:
Untested
Standard Derivatives:
Untested
Vertex Textures:
Untested
Max Texture Size:
Untested
Max Texture Count:
Untested
Max Hardware Bones:
Untested
WebSockets:
Untested
Socket Connection:
Untested
Great, it looks like you should be able to use the Virtual World Sandbox successfully!