First you need to log into your members page located at http://control.v-webs.com/members/
Once you are logged in to your members page you will need to click the "My Products & Services" link that is toward the top of the page.
The page that comes up will have a list of all your products and services.
Locate the domain you want to manage in the list of products, then click on the "View Details" button to the right of that product this will bring up the "Product Details" page for that product.
In the "LOGIN DETAILS" section of the page it will list your cPanel username and password.
If you changed your password from inside cPanel the password listed will be wrong, all you have to do to change the password is enter the new password in the "Enter New Password" and "Confirm Password" fields and click the "Update" button.