To post a pic, you need to save them to a photo hosting website. A lot of guys, including me, use Photobucket. Photobucket allows you to choose the size of the photo you save.
Another way to resize pics is to use the Paint program on your computer. Right click on your picture, and then click on "open with", then "paint". When the new window opens with the paint program and your pic, click on "image" from the menu at the top of the page. Then when the drop down menu opens, click on "Resize/Skew". When the new window opens on top of the pic, you get to choose percentages of the original size. Try starting with 75%. If that is still too big, click on "edit", then "undo", to return the pic to its original size. Then start working your way down with smaller percentages until you find a suitable picture size. When you do, click on file, then "save as", and save the pic, then upload it to Photobucket, or whatever picture storing website you use.
