How can I change the pixels in a picture.?

I have a picture but i need it to have more pixelsHow can I change the pixels in a picture.?
Pixels are little bits of information in a photo - each is a different color, located in a specific spot. If you want your picture to have ';more'; pixels, you can stretch it to be larger, but that will only stretch each pixel and cause it to look blurry or ';pixellated.';



You can't add information (pixels) to a photo without having MORE information to put in there.How can I change the pixels in a picture.?
And I have $0.25 and need a dollar!

You can NOT stretch a VW Bug out to make a limo.