My guess (FWIW) is that the question is about moving a table to a secondary filegroup (typically named *.NDF)
If so, the following MSDN article explains files and filegroups and links to the SQL DDL statements required:
http://msdn.microsoft.com/en-us/library/ms189563(SQL.90).aspx
Paul White
SQLPerformance.com
SQLkiwi blog
@SQL_Kiwi