Wimbledon gained revenge for their Worthington Cup exit at the hands of Rotherham by dumping the Millers out of the FA Cup, inflicting a 3-0 defeat at Millmoor.
Neil Shipperley's 15th goal of the season in the 36th minute and late strikes by Joel McAnuff and substitute Lionel Morgan put the Dons into the fourth round as Rotherham's poor home form continued.
Ronnie Moore's Rotherham have now suffered four successive home defeats and this was their third in the space of eight days.
The visitors raced out of the blocks and almost took the lead after just 34 seconds when David Connolly's left-foot shot was tipped round the post by Mike Pollitt.
Rotherham had their first effort in the seventh minute but Martin McIntosh failed to direct his header on target, while at the other end Connolly's header was saved by Pollitt.
McIntosh looked to have broken the deadlock in the 14th minute when this time he did find the back of the net with a header, only to see the effort disallowed for offside.
Both sides continued to create chances, with McAnuff shooting straight into the hands of Pollitt and John Mullin seeing his header from Marvin Bryan's cross saved by Wimbledon goalkeeper Kelvin Davis.
Referee Tony Bates brandished the first yellow card in the 24th minute following a foul by Trond Andersen on Alan Lee.
Wimbledon finally opened the scoring in the 36th minute when Hawkins crossed from the left and Shipperley's glancing header found the bottom corner for his first goal in five games.
He could have doubled the lead before the break but Pollitt was equal to his 25-yard shot.
Rotherham pressed for an equaliser at the start of the second half with Richard Barker and Lee both going close, although they had Chris Sedgwick booked for a foul on Nigel Reo-Coker.
Wimbledon also had Mark Williams booked for his challenge on Lee but the home side had Pollitt to thank for keeping them in the game just after the hour when he produced a fantastic save to keep out Morgan's free-kick.
Ten minutes later he denied Connolly from close range while Rotherham were creating little in their bid to snatch at least a replay, although Mullin tested Davis with a header from a Nick Daws cross.
Wimbledon finally secured their place in Monday's fourth-round draw when Connolly set up McAnuff who beat Pollitt with a right-foot shot into the top corner in the 85th minute.
Lee could have grabbed a consolation for the Millers but his header from Paul Hurst's cross was kept out by Davis.
Their misery was complete in the second minute of injury time when Morgan's low left-foot shot completed an impressive win for the Londoners.