Next time don't even quote those scammers. Report them to the moderators to get their ass kicked.
The joint, please edit the link out. I'd hate to do this without notifying you.
the man got it correct.
you can transfer btc to mtgox using the trade button from mtgox website and chose bitcoins from table. they will give you an unique address where you can deposit your btc using your btc client. after 6 conf. you will have your btc available in mtgox.
after you trade this btc (sell btc using the mtgox system) you need to hit the trade button again chose the dwolla option and follow the steps how to withdraw your money in dwolla
YMMV, though, deepceleron's course is true for large sums of money (>$2000)