I have changed this on the createaccount.aspx.cs page. I have made the box checked to yes.

I can't seem to figure out how to do it on the checkout1.aspx.cs. This is the code that I have:

Checkout1aspx23.Text = "*" + AppLogic.GetString("createaccount.aspx.23", SkinID, ThisCustomer.LocaleSetting);
if (ThisCustomer.IsRegistered &&
ThisCustomer.OKToEMail)
OKToEMailYes.Checked = true;
if (ThisCustomer.IsRegistered &&
!ThisCustomer.OKToEMail)
OKToEMailNo.Checked = true;

I'm using the 8.0.1.2 cart. Thanks