Windows 7 Tweak #2: Control UAC
User account control was a major gripe of those using Windows Vista. It was an important security feature, but because many users found it annoying they simply tweaked it by turning it off, which meant that the security advantage was lost.
Windows 7 has User Account Control as well, but its default setting is less aggressive than that of Windows Vista. You can tweak the UAC by typing "uac" in the Windows Search field. This will open the UAC menu.
There are four settings available for UAC. The default setting is three-fourths of the way up on the slider, and it only notifies you when programs try to make changes to your computer. The highest setting will also notify you when you make changes to Windows 7 settings. This is more annoying, but also more secure, because devious malware can sometimes trick Windows into thinking the user is making changes in order to disguise themselves.
There are also two lower settings. The two-fourths setting is a fairly minor change. It notifies you the same as the three-fourths setting, but your desktop won't be dimmed, which means you might miss the notification. Finally there is the lowest setting, which simply turns UAC off entirely. This isn't recommended for security reasons, but some users may be willing to take the risk.