I have hit a wall...

I have several hundred boxes each with their own unique reference code.

Within these boxes there are documents, each with their own unique reference code.

I have created a database in excel (2003) comprising of the box reference codes as headers of columns with the document references below.

THE CHALLENGE!

To create a search function where the user would be able to type in a document reference code, the search function would then indicate which box that particular document is situated.

Please help!

Thank you for your time