if you are trying to attach it dont upload it to your gallery then link to it I send this to anyone i see with problems posting pictures
there are a few ways you can do this. I would recomend though that you resize the picture to no more than 640x480 just for easy of viewing and bandwith ussage
1) you can click on the button labled IMG. a little box pops up. in that box you enter the url of your picture
www.blah blah blah/yada.jpg
2) you can enter the tags manually in your post (IMG) url (/IMG) but use [ instead of (
hope this helps
Derrick