Mam,
Are you trying to upload files or store files in the database ?
If you are uploading files, then as soon as you submit the form (in the POST mode) you will get a variable on the action page with binary stream of the file. All you have to do is copy the file to your directory structure. You can read up at
http://www.php.net/manual/en/features.file-upload.php
If you trying to store the uploaded file as data in the database. Please defines a column of type "raw" and store the file in this column.
Hope this helps