Dorchester overcame a dodgy start and dished out a lesson in taking chances to Conference National side Cambridge United.

The Magpies had just five attempts on goal - but Justin Keeler, Jamie Brown and Mark Robinson hit the back of the net with three of them to send their side into today's draw for the second round proper of the FA Trophy.

The Us - who were a Football League club until their relegation last season - began as though to steamroller Mark Morris's side into submission and it was no surprise when they took an early lead.

But the Magpies turned things around with two goals before the break and Robinson's 56th minute wonder strike virtually clinched it with the visitors' second coming with only seconds of stoppage time remaining.

Craig Bradshaw had a flawless game in the home goal and only his agility prevented the quick-settling Us from scoring twice inside the first five minutes.

Ex-Terra Richie Hanlon had him at full stretch to his right to hold his sweetly struck, second minute free kick from 20 yards. Then the keeper dived the other way to turn Craig Westcarr's one-on-one shot for a corner after a hesitant defence failed to catch him offside.

Robinson just failed to make contact when Keeler drilled a first-time volley across the visitors' goalmouth, but with the Magpies unable to retain possession for any length of time, the Us continued to threaten.

Their fourth corner after 13 minutes brought Rob Newman's side their opener. Their big men moved forward to unsettle Dorchester's defence and when the ball fell to Andy Duncan his shot was blocked.

Paul Atkins pounced to have another crack and this time the ball flew into the air off a defender for Michael Morrison to send a header wide of Bradshaw from six yards.

Cambridge may have been thinking it was all going to be too easy. But Dorchester are nothing if not resilient and Glenn Howes and Jamie Brown both showed grit and tenacity in winning tackles down the right in the 21st minute which led to an

equaliser.

Brown shrugged off U's skipper Mark Peters out near the sideline and hit a perfect 30-yard, square ball to Keeler.

Dorchester's top scorer dragged the ball inside Morrison, the only Us defender in sight, and used his least favoured right foot to swerve a low shot into Scott Howie's left hand corner from the edge of the area.

A stunned Cambridge soon found themselves behind when their defenders went AWOL again. This time Brown was the beneficiary as he rose almost unchallenged at the far post to emphatically head home Ryan Hill's inch perfect cross.

The visitors' marking was suspect again minutes after the break when home skipper Alex Browne went forward to meet Keeler's lofty free kick.

Penalised

But this time the man who has scored three times with his head in the last five games could only nod back across the goalmouth and Matt Groves was penalised for a raised boot as he lunged for the finishing touch.

The Magpies fans behind the goal were screaming for a

penalty minutes later when a shove in the back on Howes sent him careering into Brown as the latter looked to convert Keeler's cross.

Paul Atkins then spurned a good chance for the Us when he headed over from eight yards. It was a miss the visitors soon regretted when Robinson's fantastic strike took the tie further out of their reach.

Groves set him up with a precise lay-off and Robinson took the ball in his stride before leaving Howie helpless with a right-footed piledriver in the top corner from all of 25-yards.

A goal-line clearance by Hill from a Peter's header and a superb reaction save by Bradshaw to tip Hanlon's 10-yard blaster over the bar, kept Dorchester's two-goal cushion going into the last ten minutes.

As the tension rose Morris was ordered to the stand after the fourth official reported him to referee Sainsbury for something he said after Robinson was cautioned for time-wasting.

Heroic defending was called for as Cambridge battled to save the day and Dorchester's rearguard were not found wanting.

Scott Morgan threw himself into the path of Darren Quinton's drive, then Browne got in a vital challenge as Quinton menaced again. Seconds later Robinson, now helping out in

his own six-yard box, nodded Peters' goalbound header over the bar.

When a tiring Dorchester lost concentration and finally cracked to allow Dave Bridges to convert Atkins's pass after driving through the centre, all but a few seconds of the added four minutes had elapsed and the Magpies knew their job was done.