Is there a Post Practice Area on DC where I can work on my posting ability but not actually post it? Like a SANDBOX that nobody else was access to? 
-crabby3
You might also want to look at this
editor that understands bulletin board code. With it, you can compose your messages while offline and polish them to your heart's content before posting them (just copy from the editor and paste into a new message or a reply. It was written by DonationCoder member fenixproductions. BBC Editor provides you with a text entry pane on one side and an output pane on the other, so you see a real-time preview of what you type and how it will look on, say, DonationCoder.