Multi-site signup_defualt to sample page.

Hi.

Sorry if the answer to this is obvious!!!!

How can I set the default (upon multi-site sign-up) 'Front Page' of a fresh sign-up, to be the 'Sample Page' rather than the 'Hello World' post page?

I wish to avoid using a template, just for now!!!!

A piece of code somewhere perhaps.

Thanks in advance.

Regards

johnv