>Chris, I'm not sure whether Multiple Checkouts is the
>solution for this problem. Multiple Checkouts uses the
>Merge facility and that's not really suitable to binary
>data.

Actually, yes, it is: you need Multiple Checkouts to be able to share the PJM, as you note below.

>Also Check In de pj? files. Then Get Latest Writable of
>those same files. All developers can do Get Latest Writable.
>If a developer wants to modify the list of files that's
>handled by the pjx, then a (single) Check Out is required,
>followed of course by a Check In after the modifications were
>done. Other developers should then redo a Get Latest Writable.

Ok, I'll bite: why do you do it this way instead of just working with the PJM?