To enable a table for full-text indexing
1. Expand the server group, expand Databases, expand User Databases, and expand the database that contains the table you want to enable for full-text indexing.
2. Right-click the table that you want to enable for full-text indexing.
3. Select Full-Text index, and then click Enable Full-Text indexing.
Ref.: http://msdn.microsoft.com/en-us/library/ms142536(v=sql.90).aspx[^]
or else try this:
sp_fulltext_database "enable";
CREATE FULLTEXT CATALOG [myFullText]
WITH ACCENT_SENSITIVITY = ON
CREATE FULLTEXT INDEX ON [dbo].[tblName] KEY INDEX [PK_something] ON [myFullText] WITH CHANGE_TRACKING AUTO
ALTER FULLTEXT INDEX ON [dbo].[otherTable] ADD ([Text])
ALTER FULLTEXT INDEX ON [dbo].[teyOtherTable] ENABLE<