Edit 'FROM' email address for e-mail notifications

Hi,

I was wondering if it is at all possible to change the ‘from’ e-mail address for an email notification that is sent after a user becomes a member on my site.

The current email is being sent from an email address of the following format : username@boxNumber.bluehost.com, and I would like to change it to something like info@floride55.com.

This might also be a setting on the server, but any help would be greatly appreciated.

Thank you