HELP! Importing errors

This is the error message I get when I try to import my old blog to my new one. Who do I contact and what could be going wrong?!! Please help me!

OK

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.