Welcome to FlyerTalk, Vibo. It looks like you have planned a great trip. Assuming "Void" means a surface segment (or one not flown on the OWE ticket), there remain few potential problems.
DRW-DPS: I do not see any direct flights between these two cities. There are cnx via SYD or SIN.
DFW-ANC: This flight does not operate after 3 Sep. There is a STL-ANC flight that operates until the end of October.
ANC-YYZ: This CX flight only operates until the end of October. Also, I am not sure that CX can board YYZ pax at ANC.
ATL-LGW: This is a BA flight so I assume you will be putting the miles into BA, not AA.
HEL-NCE: Looks like the only way to do this is via a cnx at LHR or somewhere else. Unfortunately, you cannot buy extra segments to make this cnx as Europe is your continent of origin.
[This message has been edited by ExMo (edited 08-31-2002).]