Your question is not clear.
You want to mention a Login url at your website, from there your customers can Login into their end user accounts ?
OR
You want to mention your Hosting package links on your website, from there your customers can singup for an end user account with you ?
Because : Once a customer sing up for an account with you, you will get that singup in Admin cp > Singup > Moderate section from there you can chose activate or delete the singup.
Once you chose "Create " option system will automatically send login information to Customer email id with url / user name and password.