Ray->Box intersection

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Devils Child

hi!
continuing from this thread:http://www.blitzbasic.com/Community/posts.php?topic=71628

i suppose the old thread is to full to ask more questions, so i opened a nwe one.

this is a ray->box intersection routine.
http://www.blitzbasic.com/codearcs/codearcs.php?code=1029

it works properly except that the intersection POINT is not calculated. what i need to calculate is the intersection point. since i dont know how cube picking works...
also i need the picking not to pick "backwards" and not to be infinite
i need your help :)

i will be thankful for any help i get from you :)