Zimcricketnews figures out three options for Zimbabwe in the World Cup Cricket 2007, “The easy option (in maths terms) first: if Zimbabwe beat both Pakistan and West Indies, they’re through.
The “need some help” options: if Zimbabwe beat West Indies, and Ireland beat both Pakistan and West Indies; or Zimbabwe beat Pakistan, and Ireland lose both their remaining matches, then Zim are through.
The NRR options: if Zimbabwe and Ireland each win one and lose one of their remaining games, then the Net Run Rate will decide who goes through from Zimbabwe or Ireland.”