Once you know the simple process Sid it is very easy.
The images on the yahoo groups get compressed way to much turning them in to small 30k files..not real good if you want to show high detailed hi rez images.
If your serious about posting hi rez images, go here and build your own web page its very basic with a tutorial and only takes 15 minutes if you can build your own guiding system I'm sure this will be a breeze.
http://www.iceinspace.com.au/forum/s...light=web+page
Once you have built your own web page all you have to do is provide the link to the image when you start a thread.