Ronaldo may have grabbed the headlines in recent weeks with his goalscoring exploits, but he is building on strong foundations laid by his team-mates.
Rooney said: "They've been brilliant, but not only those two - Owen (Hargreaves) and Michael (Carrick) were brilliant in front of them and Wes (Brown) and Patrice (Evra) as well.
"As a team we're defending well and Edwin (van der Sar) and the back four in particular are helping us. We know if we keep a clean sheet, we're going to score goals."
He added: "I'm just delighted with the way I'm going at the minute and hopefully I can keep going."