Easiest way I find is to use photobuckect. Once you have opened and upload your pictures to your Photobucket account you simply copy and paste your img code (circled in red) to your clubfiat thread. Using Photobucket you can the easily post an infinite amout of pictures to your thread regardless of image size.

option 2 is to resize your images to 1280 x 1024 and they will upload ok. For this I use irfanview