I never understood what the different symbols next to the threads meant beside read and not read. I don't think it really matters
But
This is always how I upload pictures;
First go to
http://imageshack.us/
You can sign up for an account be you don't need to. I never did.
So it will look like this.
make sure you set the resize for message boards as highlighted in the picture ^^
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You click browse and locate which ever folder the picture is in. And click open.
then it will look like this
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After you press "upload now" you will get a screen like this
Then you'll want to copy the highlighted link (Forum code) and paste it in a forum post.
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The link will look similar to this ( I deleted some parts so it won't actually show up as a picture)
url=http//imageshack.us/photo/my-images/69/crashzr.jpg/]

[
Uploaded with url=http://imageshack.us]ImageShack.us[ <<< I always delete this part, its just advertising and does not impact the picture.