There are several ways to so this actually. One would be to simply export your database using phpMyAdmin or SSH and then also zip or tar up your web directory and download those two files.
Another newer way would be to utilize something MODX just released called teleport. If you are comfortable with the command line and have SSH with PHP CLI on your server configuring teleport to create and inject snapshots is rather simple.
http://github.com/modxcms/teleport
Just Host Web Hosting Help
cPanel Access
Problem:
How do I Access My Account Control Panel?
Solution:
You may access the cPanel of your Just Host account using any of the following:
If the NS (Name Servers) of domain is not yet pointing to Just Host, use http://Justhost.com.
To access the cPanel securely to encrypt the username and password so the information cannot be viewed or sniffed, use https://login.Justhost.com.
If either port 2082 or 2083 (cPanel ports) are blocked on your network, you always access th cPanel via http://login.Justhost.com
In all login options above, enter the primary domain or username of the account and its main password to gain access.
Note: Your account username can be found in the Account Setup Confirmation Email that was sent to you when your account was initially setup. If you did not receive the Welcome Email, please contact us via Phone, Live Chat or by Opening a Ticket and we will send it to the contact email address listed on the hosting account.
Just Host Web Hosting Help
cPanel Access
Problem:
How do I Access My Account Control Panel?
Solution:
You may access the cPanel of your Just Host account using any of the following:
If the NS (Name Servers) of domain is not yet pointing to Just Host, use http://Justhost.com.
To access the cPanel securely to encrypt the username and password so the information cannot be viewed or sniffed, use https://login.Justhost.com.
If either port 2082 or 2083 (cPanel ports) are blocked on your network, you always access th cPanel via http://login.Justhost.com
In all login options above, enter the primary domain or username of the account and its main password to gain access.
Note: Your account username can be found in the Account Setup Confirmation Email that was sent to you when your account was initially setup. If you did not receive the Welcome Email, please contact us via Phone, Live Chat or by Opening a Ticket and we will send it to the contact email address listed on the hosting account.