the other method is to upload a picture from your own computer, this attaches the photo to the thread and a small 'thumbnail' version is shown at the bottom of the posting
this way you simply type your reply as normal but when you are finished, scroll down to the box below the smileys where it says
File Attachments pictures should not be too big, you only have around 600k to play with, as a rule of thumb keep them to under 250k
click the box where it says browse or choose , it then opens up a explorer window like this
choose your photo click on it then click OK and then
Add this Attachmentif you preview your post you will not see the picture and you will have to re-attach it again