go to the reply box
click on 'Go Advanced'.... you will see a paperclip
follow instructions.... choose image..... it will go to where your images are stored on your computer... choose the one you want? if the pic is showing more than 1000 x 1000 pixels... it will not upload.... go back to your computer folder, double click on the pic... it will take you to an edit program... look for resize.... click the arrows down on the percentage box till the size comes down... save the pic under a new name so you can find it.... i just use the same.name.small and note where it is saved...
go back to the paperclip, choose image, pick out the right folder and the right image.small and then click on open.... now the screen changes ... click on upload.... it should go in....