My blogs are in mysite.it/blog/blog1 ... /blog2 ... /blog3 and I made a subdomain blog.mysite.it wich point to that directory.
Now I want all internal links of the blogs to have the style blog.mysite.it/something.php or blog.mysite.it/blog1.
If I change the baseurl in the conf/_basic_config.php do you think is enough? Or I have to change something else?

I changed

$baseurl = 'http://mysite.it/blog/';

to

$baseurl = 'http://blog.mysite.it/';