This excerpt taken from the SIRO 8-K filed Feb 28, 2007.
Form of Letter to be Used to Exercise Nonqualified Stock Option
I wish to exercise the stock option granted on and evidenced by a Stock Option Agreement dated as of , to acquire shares of Common Stock of , at an option price of $ per share. In accordance with the provisions of paragraph 1 of the Stock Option Agreement, I wish to make payment of the exercise price (please check all that apply):
Please issue a certificate for these shares in the following name: