I'm using WP 3.2.1 with Atahualpa 3.7.3.
My site is www.raffaelefiume.it

Is it possible to have different layouts for the homepage (where I decided to put only excerpts) and the page that appears when I want to read the full posts?

Where should I change the code?

Thanks

what kind of difference do you mean?

I'm referring to my personal site.

This is the homepage, where I would like the excerpts to be visible

http://www.raffaelefiume.it

This is the page that is shown when you click on the excerpt:

http://www.raffaelefiume.it/?p=1

Here, you can see a grey line above the post that I would like to remove. I'd like to remove the right sidebar for each post, too.

Which options should I modify?

Thanks

Look in the Style & Configure Sidebars and the Style Posts and Pages sections.

solved. Thank you