1. Log on to your the Spasie Media client area here: http://www.spasie.net/whmcs/clientarea.php (if you're not logged in already)
2. Click on the "My Products & Services" link and then find the desired domain name in the table. In the same row, there's an icon at the right (It looks like a paper with a green arrow). Click on the icon.
3. At the bottom of the next page there's a section called "Login Details". You can either reset your password there, or you could just click on the button above it labelled "Login to Cpanel".
4. If you reset the password, you can go to http://cpanel.spasie.net/ and login with your username and password.