It's hosted at http://www.possumholler.net/alevina.jpg
It's inserted into the post with the image tags...[img]above web address here[/img]...by using the button that has the mountains with the sun over it next to the world with the chain under it. That way it's not up loaded to TSPtalk's server. The TSPtalk server has limits that you mention in your post.
As far as the resolution - I'm not sure but the resulting file might be dependant on the resolution settings of your screen. Right click your desktop and choose properties then the settings tab.
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