West Ham celebrated their return to the Premiership in style as they came back from a goal down to beat Blackburn.
Andy Todd fired Blackburn ahead after the Hammers defence failed to deal with Morten Gamst Pedersen's low corner.
Teddy Sheringham equalised just after half-time, shooting home when Yossi Benayoun's pass rebounded off Todd.
Nigel Reo-Coker smashed a superb second and Matthew Etherington tapped in before Rovers had Paul Dickov sent off for a lunge on Paul Konchesky.
The home fans held up banners declaring 'Back Where We Belong' before kick-off, and the way the Hammers responded to the early setback will give them belief that they are back for good.
Alan Pardew's side almost made a dream start when Reo-Coker set up Marlon Harewood, but the striker dragged the ball well wide as he tried to shoot across Brad Friedel.
Blackburn soon made their pressure pay when Gamst Pedersen's corner from the left bobbled around the area and dropped invitingly for Todd.
West Ham created several chances before half-time as Sheringham began to exert his influence on the game.
The 39-year-old had a low shot from the edge of the area saved, curled another just high and wide, and then saw a close-range effort blocked after Friedel had failed to gather Konchesky's low cross.
But Blackburn were caught cold after the restart when Benayoun, one of four new signings in the Hammers side, sent a pass towards Sheringham, the ball hit Todd's heel and the striker pounced.
Rovers almost regained the lead straight away when Pedersen sent a dipping volley just over the bar, and Sheringham narrowly failed to convert Etherington's pass on the stretch.
Todd was denied a second at another Blackburn corner when Konchesky headed off the line.
And Reo-Coker made no mistake as he collected Etherington's pass and skipped past a challenge before hammering the ball into the top corner.
The home side largely controlled the game after that, and Etherington made it three from close range 10 minutes from time after Benayoun had cut in from the right.
Blackburn's misery was complete when substitute Dickov, who had been on the pitch just nine minutes, slid in late as Konchesky cleared the ball and was given a straight red card.
Rovers new boy Craig Bellamy had the chance to pull one back late on but he dragged his shot from the right just wide.
West Ham boss Alan Pardew:
"It's been a great day for West Ham. I've never experienced in a league game a stadium quite like ours. It was a victory for everybody.
"Hopefully now players will look at us and think 'I wouldn't mind playing there'."
Blackburn boss Mark Hughes:
"We expected them to come flying out of the blocks and in the first half we were reasonably comfortable.
"But in the second half they got the initiative and they didn't let go.
"At this level you need eight, nine or 10 players playing well to get results. We didn't have anything like that, which is why we got beaten. That won't happen again."
West Ham: Carroll, Ferdinand, Gabbidon, Dailly, Konchesky, Reo-Coker, Benayoun, Mullins (Noble 84), Etherington, Sheringham (Newton 72), Harewood.
Subs Not Used: Hislop, Ward, Zamora.
Goals: Sheringham 46, Reo-Coker 62, Etherington 80
Blackburn: Friedel, Neill, Todd, Mokoena (Dickov 72), Matteo, Emerton, Savage, Reid, Pedersen, Kuqi (Gresko 55), Bellamy.
Subs Not Used: Enckelman, Flitcroft, Tugay.
Sent Off: Dickov (81)
Goals: Todd 18
Referee: A Wiley (Staffordshire)