[ns] linked lists in ns Problem

hi the list, i created my own linked list (in priqueue.cc) but there is a problem : there is always a node in the list wich has all valu equal to "0". where did ns make the initialisation? or how can i eliminate it! thanx

[ns] linked lists in ns

hi every body, can someone tell me how we can create a linked list wich is invoked and modified by both the mac802-11.cc and the priqueue.cc. i need any idea plz. thanks a lot,