SQL Server 2008 Resize LDF
USE dbname;
GO
-- Truncate the log by changing the database recovery model to SIMPLE.
ALTER DATABASE dbname
SET RECOVERY SIMPLE;
GO
-- Shrink the truncated log file to 1 MB.
DBCC SHRINKFILE (2, 1); -- here 2 is the file ID for trasaction log file,you can also mention the log file name (dbname_log)
GO
-- Reset the database recovery model.
ALTER DATABASE dbname
SET RECOVERY FULL;
GO
-- http://social.msdn.microsoft.com/Forums/en/sqldatabaseengine/thread/54e6e281-005a-4b07-8c85-3685441f4f3d