OK I think I understand, however I think what I was talking about is say your on the home screen and you look at the recent post widget. You title was Hello Infini World and you click on this link. That link takes you to your blog which is on a different theme. I want to know if I can use the Infini theme throughout instead os switching to the default MU theme.
Update: I just posted a post under the admin and this apears in the news section. I wan’t to know if i can have every blog have the same theme as the news section instead of the default white and blue MU theme.