You can query the syscomments table as follows
select distinct object_name(id) from syscomments with (nolock)
where ctext like '%Your_Column_Name%'
However, if you have the same column name in multiple tables, you may not end up getting the desired result. In that case, you could search for the specific table instead of the column name.
I feel the need - the need for speed
CK Bhatia