IRVING, Texas - Finally healthy, rookie Julius Jones is showing why Bill Parcells was willing to trade out of the first round in the draft when he had his choice of any running back.

Jones showed off his speed, a few nifty moves and some perseverance Thursday, running for 150 yards and two touchdowns to help the Dallas Cowboys beat the Chicago Bears 21-7.

The former Notre Dame star also showed durability, with 33 carries just four days after running 30 times in his starting debut for the Cowboys (4-7).

"He's determined. I think he's got some stamina and he doesn't get discouraged," Parcells said. "Yeah, he showed me something. He sure did."

That's a high compliment, considering the questions that were raised after Jones missed the season opener because of a rib injury and then broke his shoulder blade in his NFL debut in Week 2.

His older brother, Thomas, started at running back for the Bears.

Thomas Jones was the best thing the Bears (4-7) had on offense, but his 46 yards on 14 carries and 48 more on six receptions weren't enough.

The brothers shared a long hug after the game, with Thomas holding Julius' head and whispering congratulations into his ear.

Julius Jones had a 33-yard TD run on the Cowboys' opening drive. He took the handoff from rookie Drew Henson, who made his first start, and froze two safeties with a nifty move before scoring.

After gaining 95 yards on his first 15 carries, Jones was held to 5 yards on his next 10 tries. The second-round pick bounced back with 50 yards - and a 4-yard TD run - after that.

"I guess I showed (Parcells) I can be in there and be consistent and handle the carries," Jones said. "Hopefully, he can continue to count on me and have faith."

Henson was 4-of-12 for 31 yards and an interception, returned 45 yards by R.W. McQuarters for the Bears' lone touchdown.

Vinny Testaverde, who didn't practice much this week because of a sore shoulder and back from a hit last Sunday, took over at quarterback for Dallas in the second half. The 41-year-old Testaverde was 9-of-14 for 92 yards and the go-ahead 5-yard TD to Darian Barnes.

The Bears lost their second straight since winning three in a row. Again, an ineffective offense (140 total yards) was mostly to blame.

"We haven't been able to run the ball. We're not getting much out of our passing game," coach Lovie Smith said.

Rookie quarterback Craig Krenzel went 5-for-10 for 46 yards, then left with a sprained right ankle midway through the second quarter. Jonathan Quinn was 10-of-21 for 86 yards with two interceptions, both in the fourth quarter.

Henson's last start at quarterback had been Jan. 1, 2001, for Michigan in the Citrus Bowl before three summers in pro baseball. He led an opening 62-yard, five-play drive but then struggled against the blitzing Bears.

"He did all right," Parcells said. "It was just situations he was not seeing, simple things that he had a little trouble recognizing. He needs a lot of work, and that's OK. The guy hasn't played a lot."

Four days earlier in his NFL debut, Henson was 6-of-6 for 47 yards and a TD after replacing Testaverde in a 30-10 loss in Baltimore.

Last April, no running back had been picked when the Cowboys traded their No. 1 to Buffalo and moved down 21 spots. Steven Jackson, Chris Perry, Kevin Jones and Tatum Bell were gone when it was Dallas' turn again.

But Julius Jones was a back they had targeted when they bypassed their first pick.

"What you saw tonight was some of that vision," owner Jerry Jones said. "And a little bit of the way he picks his way through there kind of reminds of another guy (Emmitt Smith) that's played a lot of ball here."

Not to mention that the No. 1 pick Dallas got from Buffalo could be a pretty high choice because the Bills (4-7) are struggling.

Notes:

Only Emmitt Smith has had more carries in a game for Dallas, with 35 in one game and 34 in another. ... Barnes became the 62nd player Testaverde has thrown a touchdown pass to, tying the NFL record set by Steve DeBerg.