Does Digital Crocus has Cpanel ? (usually yourdomain.com/cpanel)
If so just click the First icon (mail), then Manage/Add/Remove Accounts, then click 'configure mail client'. If your using Outlook it'll just auto setup, if your using thunderbird you'll need to enter the details manually.
All you need from the server is:
Mail Server Username: (usually your email address prefix or sometimes yourname+yourdomain.com, with the + in place of @)
Mail Server Password: The one you picked
Incoming Mail Server: mail.yourdomain.com (or alike smpt, pop3 etc)
Outgoing Mail Server: mail.yourdomain.com (or alike smpt, pop3 etc)
And then a client such as thunderbird to enter them into. Click connect and you're away. Not much more to it, just gotta make sure your 4 details above are correct (Y)