First, AFAIK, you cannot separate a table across filegroups. You can separate across files, but not filegroups. The exception is partitioning.

You can move a table's data to a new filegroup by moving the clustered index. The Rebuild section (http://msdn.microsoft.com/en-US/library/ms189858%28v=SQL.90%29.aspx) talks about that. CREATE WITH DROP EXISTING will move to a new filegroup.

ALTER DATABASE is how you move the transaction log. See example F - http://msdn.microsoft.com/en-US/library/ms174269%28v=SQL.90%29.aspx