Win and guarantee qualification for the semi-finals.

Lose and face a restless wait to see where they end up.

``It's that simple,'' Mounties coach Steve Ghosn said.

``We're treating this week like a must-win game. There's no easy game in this competition and Bankstown beat us only a couple of weeks ago so, hopefully, we've learned from our mistakes and put in a good performance.

``If we lose and Penrith win we're out.''

With only five points separating the top six teams in the third-tier rugby league competition, the make up of the top five is still very much undecided.

Mounties enhanced their finals prospects with a crushing 58-28 victory over the Southern Districts Rebels last weekend. Three tries each to Channarath Ly and Wayne Dargan was the backbone for one of their most impressive wins of the season.

It was a different story for Cabramatta, who went down to Mounties' opponents for this week, Bankstown, 28-16. Tries to James Trotter and debutant Cruise Iosefa gave the Two Blues an early 10-0 lead.

However, a mounting error count proved to be their downfall as the Bulls kept their minor premiership dreams alive.

If Windsor and Mounties win, Cabramatta would need to lose by more than 50 points this weekend to miss out on the finals.

A win could lift them to second spot.