Using "GNOME" and the foot logo on t-shirts/etc.

[Simos Xenitellis <simos74 gmx net>]

Hi All,
We (Greek team) are planning to print some t-shirts for local use and
would like to use "GNOME" and the foot.

We would like to do it right, and in the process help others in a
similar situation.
"GNOME" and the foot logo are (c) by the GNOME Foundation.

1. Does this apply to the US only? Is it worldwide? (am clueless on this
stuff)
2. Would the GNOME Foundation like to approve first the image before
they are printed on the t-shirts?
3. Are there SVG files from similar work?

Cheers,
Simos