3.0: initial password for asp:Login

[R.A.M.]

Hello,

I have created asp:Login control on default.aspx page. In Page_Load() I
wanted to initialize login name and password:

LoginControl.UserName = ...; LoginControl.Password = ...;

but I received error:

Cannot assign value to 'System.Web.UI.WebControls.Login.Password -- it is
readonly.

Could you help me please to solve the problem? Thank you!

/RAM/