Advice on buying a new digital camera?

wanna buy a Digital SLR camera already looking at a nikon but i wanna know if i can take picture in a fast way with them
like pro's do you know like runway pictures

If its burst speed your after, the fastest nikon is the D2xs with its high speed crop mode. But it makes the resolution of the pics only 6.8 megapixel. Canon's 1D Mark II n can burst slightly faster and its resolution while doing so is 8.2 megapixel. In addition, the canon has a smaller focal conversion factor of 1.3x vs the Nikon at 1.5x. Meaning the sensor is physcally bigger. Bigger pixels are better pixles.

If you aren't 100% sure what camera you want, here for the "best" online reviewer on the web. If someone knows of a better professional review, please let me know.
http://www.steves-digicams.com/hardware_...

FLSTC is right. detailed specifications and instructions were specified on steve's digicam.

I'm not sure about the Nikon, but the Pentax K10D does have the continous shooting mode (3 frames/second), which is what it sounds like you're looking for. I got the K10D a couple months ago and it worked wonderfully when I photographed a fashion show (runway, like you said).