Anyone know how to remove old securom files?

Anybody out there knows how to get rid of old SecuROM files? Here’s the situation… I have a 1TB WD My Book drive that I was using as a backup. However, I’ve not used the drive in nearly 2 years and the backups on it were from an older Windows install. Anyway I was deleting some old files I no longer needed, including some older images/backups and ran into a folder I can’t delete because...