Recommend ShredIt for Windows 5.1

Files can be recovered from your computer's recycle bin. Protect your privacy with this easy to use file shredder that shreds data so it can't be recovered. Whether you want to erase a hard drive or wipe a file, ShredIt for Windows is the computer privacy software for the job. It shreds files, folders, disk free space, hard drives and external hard drives. It comes with step-by-step instructions, built in safety features, government standards compliance (DoD, NSA) and a configurable overwrite pattern.