Picton need to take their third Illawarra Premier League scalp to earn a spot in the Bert Bampton Cup final in two weeks time.

The Rangers meet Wollongong United in the competition's second semi-final on Wednesday night for a chance to play Port Kembla in the decider on July 13.

Brett Morley's men have already knocked out Premier League outfits Bellambi and Dapto Dandaloo Fury in the Cup.

But the in-form Reds represent another difficult test and Morley isn't entirely sure what to expect.

"They are probably a bit of an unknown to us at the moment," he said.

"I know they have a decent striker who is sticking the ball in the back of the net so we may have to counter him.

"I think we probably will be a bit like Dandy where we countered their game and the way they attacked and made them come back through the middle."

The Rangers scored an unlikely 2-1 win over Dapto Dandaloo in the quarter-finals of the Cup to set up their clash with United.

And Morley was confident if they could emulate that display, they'd be in with a chance on Wednesday.

"We like to play an attacking, high pressing sort of game," he said.

"It is probably more worrying about what we are going than what the opposition are doing because if we are doing it right they shouldn't be able to batter us too much."

A win would set up a meeting with Port at John Crehan Park later this month after the Zebras defeated Berkeley Sports 2-1 last week.

"It is a great opportunity for the club and I am sure our [president] and those guys are really keen so it is something that we have to have a real crack at," Morley said.

"It is no mean feat beating a side like Dandy and it would be even nicer to take another tall poppy if you like."

The Cup final has been moved to 1pm this month to ensure it will not clash with the South Coast Wolves' crucial game at WIN Stadium against Sydney United.