PHP code to redirect Login to "Pages"

Hi.

Can anyone help me with a piece of php code that I could use to prevent the initial display of the Dashboard for ‘sub-site’ Admin logins (I have a dedicated Theme for sub-sites, in which I would like to place the code in the theme-functions.php!).

My wish is that an Admin login always display the “Home Page” Text Editor (when using the above specific Theme) upon entering the Admin Menu Display/Text Editor.

Hope this makes sense?

Thankiing you in advance.

Regards

johnv