Remote Desktop Services is not a Feature of Windows Web Server 2008. You are still able to connect with a single Remote Desktop session to manage your server, you just do not receive the full feature set of Remote Desktop Services (formerly Terminal Services).
myhosting.com may be offering different versions of Windows Server in the future which will be able to support Remote Desktop Services. Please check back if this is a feature you are specifically looking for. Also our support team may be able to suggest alternatives depending on your exact needs of this feature. You can contact our support team at any time by emailing firstname.lastname@example.org.