To transfer your website and your e-mail hosting for your domain at mywebpage.gr, you have to change your nameservers of your domain, through the domain registar's control panel. This control panel is provided by the company you have registered your domain. If you cannot change them or have any questions about this contact them and request them to change your domain's nameserver to
ns1.mywebpage.gr
ns2.mywebpage.gr
After this step, your domain will search mywebpage.gr to find its website and e-mail host, and optionally you can connect to mywebpage.gr control panel to change the parametres of your hosting. If your stillneed help about these steps feel free to contact mywebpage.gr.