Hi Fordman and welcome to CC.
It isn't so straight forward, for sure.
From the client, click the Player Admin button that is at the bottom of the screen.
This will open up your Web browser to the Carbon site.
Click My Account from the menu options along the left of the page.
Then click Play Money from the new menu that opens up.
On that page you'll see a link that says "Click here to exchange $250 play money for Step 1 SnG Coupon."
Good luck with the fun steps.