Sorry about the image size, still trying to work out how to re-size on a mac...
You might consider a web-based photo storage. I use Photobucket. I'm also a Mac user.
The service is free -my all-time favorite
4-letter "F" word- and after uploading your snaps, you simply go to the photo you wish to post, drag the cursor over the pic, click
IMG code and the photo will be copied. Then simply paste into your thread and you're in.
http://photobucket.com/You should have
Photoshop Elements on your Mac. A simple way to resize images, then store them on Photobucket. Try to keep the photo's largest dimension in the area of 640 pixels.
Also, your digi camera likely has a choice of image sizes driven by pixel count. Try a smaller image size and you will not likely need to resize the photo.
Try your new skills in the forum's
Test Zone prior to posting. If it ain't to your liking, delete it and try again. Good luck. The forum's administrator will thank you, too.
Monte