2 important things! 1st, you must, in your main account, have less VC than your salary is worth. Like, if you have 3000 salary, and you have 5000 vc, then it'll just discount the 3000 and you'll have 2000. However, if you have 2999 VC and the salary is 3000, then it'll just go back to 2999 and the salary will be paid for. If your total VC with your original account (Not dummy, amount of money the dummy has doesn't matter as long as it's more than the salary, make it like 4k). The second note is that I've never paid for the salary doing this, so I'm not sure it still works. I've read people did it before, though, and I did the original player glitch so if it does in fact work with salaries, this'll be how it works. Have any questions, PM me or chalkboard.

This is long, so I divided it into 2 chalkboard messages.

You need to have 2 accounts, both have live (Not gold, but at least the free version of live). In the second, the dummy account, you need to have like 5k VC. Then, you:

step 1. log into your dummy account in your first controller and your real account in your second controller. Start the game with the dummy account, 1st controller.
step 2. Hover over MyTeam and Press "a" with your second controller and say yes to both questions and immediately dashboard to the xbox home.
step 3. start 2k13 with your second controller, the amount of VC it shows should be the amount of your dummy account. Go to Myteam and play a game. It should then revert back to your normal VC amount, spending none of it and paying the salary.