Import a application In sharepoint 2010

I Have a exported application in my  c drive  in a folder . I want to import it to a new web application . how can  i achieve this

I tried using  management shell  like :

import-spweb http: //  path:c:\path name

but its throwing an error  like. import -spweb:a positional parameter cannot be found that excepts  path:c:\path name.

please  help...!!!!