Here are a couple of different ways to search for a column name within a SQL Server database:
-- using information_schema views (preferred method)
SELECT sc.table_name
FROM information_schema.columns sc
INNER JOIN information_schema.tables st
ON sc.table_name = st.table_name
WHERE st.table_type = 'base table'
AND sc.column_name = 'ColumnToFind'
ORDER BY sc.table_name
-- old school
SELECT name
FROM sysobjects
WHERE id IN
(
SELECT id
FROM syscolumns
WHERE name = 'ColumnToFind' )
AND xtype = 'U'
ORDER BY name