How to fix red color in my photos ??? help

Dear All, It's a please to be a member in your forum,
Really I am so happy for that.
I have bought Nikon D7000 and it is an excellent camera,
but when I shoot outside under the sun sometimes I
see that my photos have a little bit red color or they are yellowish
Is there something with the settings of the camera , most of the time I use auto settings
to save time and some pictures are excellent while others are not like
the one I attached you ?
help me
do i have to use certain tools, .....etc

There's a procedure for shooting and adjusting the white balance with a grey card in the manual, and saving those settings as the default setting... You can then set that default to one of the U custom modes...

I would adjust the colors and exposure levels in your photo shop program. The pictuure seems a little over exposed which, will affect the colors.

You can fix white balance in post processing with most software. I would recommend shooting in RAW mode if you want to play with it there and not adjust it as Fred has suggested.

Sharif.al,

Not sure what software but if you have Elements 8 or 9 and above or Photoshop CS4 and above you can open your jpegs BUT if using Windows its Open As Mac users its just Open and when you navigated to your image look at the window that shows jpeg and click on it and you can open in Camera RAW. You could use the white point selector but remember white point means 18% or 12% grey. I used the ground of dirt by his left sleeve and got a default color temp of -42 and moved the the slider to -12 while watching his skin tone and the oranges.
In normal circumstance you would have seen real kelvin numbers and since the image was embedded I could have chosen several default Nikon of Landscape,Portrait, Neutral and so on. Your exposure is on after I moved that temp slider so as others said you could try RAW and definitely use a grey card or any of the many different ones out there or can use one of my favorite not sure if in your local is a translucent top of Pringles can to shoot a white balance.
But in Camera RAW you will have a choice of white balance; I know it can be a little overwhelming but you can nail it.
In some of Scott Kelby Elements book he has a card that is divided in fours Black, White, and Grey (film) and Digital you could use that in your first frame then pick that digital grey when selecting the other images.

Ciao,
Lou Cioccio