Yeah, those programs will do - even if I would recommend IZArc which is free. 7-zip is also free, but doesn't sport the same professional and clear, good-looking GUI. I also don't know if it's support for the same amount of archives. IZArc supports a HUGE amount of archives. The only thing it doesn't support is *.RAR part archives. This shouldn't be a problem in your case. It's still under frequent development too.