PNG files do zip, but don't compress when they zip. So, you will need to open a free 4shared account. It's really easy to use. Then, you can upload your 20 mb zip file to 4shared. After you upload it, just click on the file, and you will be show the download link. Copy the link to your email for Holly and she can then download it from your 4shared account. :)
Originally Posted by uinthas
Thanks for the quick response! I downloaded 7 zip, but I am still having the same problem. It creates a zip file, but the size is still the exact same as the orginal file & it is too big for me to email (20.7mb). Can you think of something simple I might be doing wrong?