Best is to risize back to 800x600 with for xample imageresizer (free window tool to find at Microsoft.)
Then put it up to a photosite like Picasa, Flickr, or Photobucket.
Then copy the link in posting here like this.
img linkadres /img
then it looks like this
img and \img hast to be in this [***] and [\***] were the 3 stars are the word img.
Difficult discription but if I show correct it disappear because forum think I post a picture.
Herman