PC World posted a guide on how to configure Microsoft's operating system to beat malware and keep data secure

In this guide, I'll run through these and other significant security enhancements in Windows 7, and provide my recommendations for configuring and using them. I'll pay especially close attention to the new AppLocker application-control feature, which may be a Windows shop's most practical and affordable way to combat socially engineered Trojan malware.

  Expert's Guide to Windows 7 Security