Orthorectify probles

Hello,

Just looking for some help in regards to orthorectifying images using
GRASS5.0beta. I have 40 images and I need them all orthorectified, can
GRASS orthorectify images that have been rectified in other packages? If
not, do I need to run i.points before running i.ortho.photo, or can I
register my aerial photos in the i.ortho.photo package?

Thanks

Cameron

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CAMERON FULTON
(403) 571-6591
GAIA Consultants Inc
    Suite 306, 822 - 11th Avenue SW
    Calgary, Alberta
    T2R 0E5