SELECT col.name 
FROM <db_name>.sys.columns col, <db_name>.sys.views vew
WHERE col.object_id = vew.object_id
AND vew.name = '<view_name>'

INFORMATION_SCHEMA views holds metadata about objects within database. INFORMATION_SCHEMA.COLUMNS uses underlying sys tables to retrive the metadata ( check sp_helptext 'master.Information_schema.columns' ). You can use this simpler query to select column names used in any view.

SELECT col.name 
FROM <db_name>.sys.columns col, <db_name>.sys.views vew
WHERE col.object_id = vew.object_id
AND vew.name = '<view_name>'