How to take Hi-Res picture like This?

I want to take pictures like this, I have a Nikon D5000 and I'm trying to tweak with it, but yet, I still can't get this good of quality, I know the majority deals with Photoshop and RAW images, any tips are helpful.

I don't know what you mean, that picture is of very low resolution.

That picture is NOT low resolution, but the colors and exposure seem to have been altered with software such as Photoshop.

The sample is only about 400x300 pixels - hardly high resolution. It looks like an HDR image to me. Maybe. That tree in the upper right is blown out like crazy. The image could just be overexposed by one stop or so. Or, it could be just desaturated a bit in Photoshop. Try any or all of the above and you'll probably come close.

I'd say to take a normal exposure, adjust the brightness up about +20, and desaturate the image a bit and you will come close.

A sharp image? Bright light, very bright light. Use the best aperture for the lens, probably about f/8 for a lens in the normal focal length range. Use a very fast shutter speed. Use the lowest ISO possible ISO 100 or lower, ISO 50. Use a prime lens. And finally lots more bright light.

High resolution images?

Look on page 62, 63 and 64 of your user manual

Mainly shoot Large with JPEG Basic settings.

You can edit the best from the rest, using the JEPG images and just process the matching RAW files of those images Save the processed RAW files as DNG, TIFF or JPEG files

If you are competent enough using your camera, there will be little or no need to use Photoshop.

You can process the RAW image files and save them as JPEG, TIFF or DNG files