Umaga, who led New Zealand to a one-sided Test series victory over the British Lions in the summer and a Tri-Nations title win two months later, said the prospect of a match against traditional rivals Wales at a sold-out Millennium Stadium was mouth-watering.
"I'm looking forward to the weekend - you can only train for so long!" he said. "I just want to lead well and be the player I have been in the past. I want to concentrate on being the best player in my position, because if you're the best player, you'll always get respect. If you look like you're playing just because you're the captain, you're in danger of losing the respect of the players."
Umaga is also looking forward to concentrating on rugby, rather than fielding questions about the incident that ended Lions captain Brian O'Driscoll's tour in the opening minute of the first Test in Christchurch.
"If I carried all that sort of stuff on my shoulders going into a game, I wouldn't be able to get out there," he said, referring to his involvement in the alleged spear tackle that wrecked O'Driscoll's shoulder. "There's a lot more peripheral stuff that you have to get used to. For 80 minutes, I get to put it aside and play rugby.
"You can't control these things and you just have to get on with it. That (O'Driscoll) incident has been dealt with - I don't want to help him sell his books any more."
Wales coach Mike Ruddock has been forced into several changes in his backline for Saturday, but Umaga is expecting more of the ball-running, exciting form that won a Six Nations Grand lam six months ago.
"I think Wales will look to move the ball, with the likes of Stephen Jones and Ceri Sweeney - both of whom I've played before. Out wide, they've got Mark Taylor to straighten the game.
"Hopefully, it will be a great game with a closed game and a dry track."
The Wales match is the first leg of a possible Grand Slam tour, and at the age of 32, Umaga is finding himself surrounded by players who weren't even born when New Zealand last achieved the feat in 1978. Of the starting lineup on Saturday, only Umaga and hooker Anton Oliver were walking when replacement Brian McKechnie kicked the All Blacks to a controversial win over Wales in Cardiff. Lock Chris Jack was six days old and winger Rico Gear was aged seven months.
"It will be an amazing year if the Grand Slam is completed, but it's already been an amazing year," Umaga said. "We're trying to educate the guys about the past, and it's good for them to know the history of the All Blacks."
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series