>I have a com object that was written in c++. This object is used to read a binary file and stores the data from this file in a collection property. The problem is that VFP can not read this property. VFP can read other properties of the com object but not the collection. What can I do ?.

What's your syntax ? What's error message displayed ?
Normally for a collection you can use (assuming collection is called locs):

for each oLoc in mycom.locs
*...
endfor

However some collections especially ones in OCXes might not work with this syntax and you could use :

for ix=0 to mycom.locs.Count-1 && Generally 0 based collections
 *oLoc = mycom.Locs(ix)
 *...
endfor

Cetin