If 'MySample.com' is hosted with Dreamhost, you can easily create a Redirect in the DreamHost CPanel.
Under domains click Manage Domains
Click Edit to edit MySample.com
you will find a 'Redirect' field here, simply redirect MySample.com to Sample.com
If 'MySample.com' is not hosted with DreamHost - you will need to create a redirect page yourself, and upload it to your host via FTP. Or perhaps your host for MySample.com has similar functionality to DH? If not, consider moving it;)
I hope this helps:)