O2 - rotating around origin?

[Prospero 1]

Hi all,

I'm trying to figure out how I rotate points around the origin in O2 - i.e. not around the origin of the particular object - just the origin of "O2 drawing space". I'm a dummy:) I can see one could just place the pin at the origin.. but how does one do this?

Also, could someone point me to a tutorial for editing the transparency of a texture (using Photoshop)?

Thanks;)

Prospero