>I got it to work (that is conceptually, more at end of message). Here is the code I used for anyone that is interested:
. . .
>My problem now is that the 2nd time that I traverse thry the treeview I get exception c0000005 and vfp craps out. I am using VFP5 with the SP3 for it installed and the TreeView control that came with that service pack.
>Any suggestions on this error?

I've been trying the same using VFP 6.0 w/ SP1 and although it doesn't get
any exceptions, everything just locks. I put the result from traversing
the nodes and putting some info about each node into a local VFP cursor.
After I'm finished traversing I'm able to browse this cursor and content
are correct with how the nodes appear in the treeview. But things lock
so the only thing I can do is to shutdown VFP. Has anyone accomplished
to traverse this without getting exceptions etc?

I think the problem lays in how VFP responds to the .next method using
this ActiveX component.