Dazzle recording software?

Hi i play/record video games for youtube and the program that i am using ..well ....sucks balls put it nicley so if anyone knows a good free program ....no trials preferably that will works with windows-7-64bit that would help me out alot and it has to work with dazzle dvc 100 i am currently using debut and it is giving me **** quality people arnt complaining but i would like it better just program names preferbly as well thanks