From Martin Information:
PCM Pro was designed to perform preventative maintenance on a PC without requiring any user interaction other than the initial setup. This is great for home and small business users who do not have an IT department or do not have the time to perform the maintenance themselves. This smart tool allows you geekless users the opportunity to save time and money without having to pay someone else to keep your computer performing at it's best. PCM Pro has all the same features that PCM Standard does, but comes with an expanded E-mail Report featuring Firewall Status, Antivirus Status and an option to report on Unused Programs. From one easy to use interface users can schedule PCM Pro or Disk Defrag and enable e-mail reporting. If you want to increase the lifetime of your computer, while saving time and money, then you need to use PCM Professional.