Comercial Sites

Converting a seaside hosting site to a commercial site can be done through First contact them to have your site setup on their commercial hosting. For SeasideHosting - one of the steps involved with this is changing the alias for your seaside hosting site - Under the seasidehosting admin tool, click Server Alias:

Server Alias
If you have an existing site, you will need to change the DNS entries, here is an example from Yahoo:
Advance DNS Entries
Netstyle will contact you with the payment information once it is working.