be careful how you enlarge digital pictures. the digital enlargement capabilities of most digital cameras is rather crude. digital cameras use a crude photo enlargement method that is also used by photoshop called bi-cubic interpolation. you can read more about this here: http://photoenlargement.imagener.com.
i have used one photo enlargement program with great success called imagener. you can find it here: http://www.imagener.com. hope this helps! -dh
Here is a good article on enlarging (interpolation) of images
And Neat Image is good for noise. Did I mention it was Free for home use.
Apparently if you use Photoshop to enlarge images but do in in 10% stepsyou do notsoften or blur the image :shock:i.e. 10% then another 10% you get the idea.