ICARUS in XP

Hi! I i’ve been having two problems:

(1) I have ICARUS installed on two XP machines. But when i try to open a .avi file it says “Unknown File Format”. It does this on both computers. When i do it on my 98 machine it works fine, but i’d rather not do it on this one.

(2) When i import the camera data into blender, i don’t know how far away to put to put the object from the camera. For example, if my sphere is too close or too far away from the camera it won’t match up.

Sorry if this isn’t clear, i will rephraze it if needed.

   Thanks!  :)  
         Stefan