How to create a Sphere map (VTF)

Hey guys!
I would like to know if someone is able to tell me how can I convert Sphere maps into VTF format? which *parameters *to use?
I have like thoses maps:
http://www.turbopix.fr/i/khdinacbgl.jpg[/T] [T]http://www.turbopix.fr/i/b7w5pgm1wi.jpg

I want to use them as $envmap (correct me if I’m wrong) for a reflection effect on my models.

Thank you for your answers :wink:

You can’t. You’ll have to use another program to convert them to the cross shape then make a cubemap with those.