How do I do this?  Sometimes it seems to work, and other times it doesn't.  I'm so fed up with this right now I can hardly think straight to properly describe this problem.  I'm sure someones' had this problem before and found the answer so please help!

Also, it has to be for obj files because the program I'm modeling with (Silo) keeps malfunctioning when I try to export as 3ds (which, of course, work fine with pictures)...

thanks!