<p>I have to restore a database that has been inadvertently DROPped in MySQL 5.0.  From checking the backup files, I only seem to have .FRM files to hold the database data.</p>

<p>Can anyone advise whether this is all I need to perform a database restore/import from the backup, or are there other files I should have to hand to complete this?</p>

.frm files are not the data files, they just store the "data dictionary information" (see
MySQL manual
). InnoDB stores its data in ib_logfile* files. That's what you need in order to do a backup/restore. For more details see
here
.