Daca nu-ti face asocierea cu toate fisierele cunoscute, mergi in start, all programs, 7zip, 7zip file manager, tools, options apoi selecteaza ce fisiere vrei sa-ti deschida programul.
Poti incerca sa repari arhiva corupta.
http://www.youtube.com/watch?v=QgOLYgMN4mQ
Multumesc
Universal extractor e cel mai bun
http://www.softpedia.com/get/Compression-tools/Universal-Extractor.shtml