We usually do with in 24 - 48 hours of receiving login information of your web site.

We need:

* Your ftp information
* Your web panel url (hostpanel where you create databases, email accounts etc)

But sometimes its very difficult to work it out because of different configuration of different host servers. In that case it might take up to four days.

Few things like forwarders, require assistance from your host. So it depends on how fast everything will workout.