User Account Control (UAC) became famous with Windows Vista when a dialog box for admin approval prompts for almost every administration task. There for everybody started hating it in Windows Vista and which is one of the draw back.
Windows 7 also comes with UAC but with minimal usage. Microsoft understood the user feedback on Vista and fixed it in Windows 7. UAC in Windows 7 prompts for high administration tasks only, not like Vista.
Here you can find a benchmark test between UAC in Windows Vista and UAC in Windows 7.
You can disable UAC in Windows 7 if you don’t like it to prompt for admin approval for any administration tasks. It may be little risky, but if you are the only administrator and user for particular computer, you can do it.
To disable UAC in Windows 7,
Go to Control panel in windows 7, if it’s in Category view; go to ‘User Accounts in Family Safety’-> Click on ‘User Accounts’ -> ‘Change User Account Control Settings’.
if your control panel view in Large or Small icon view, you can go to ‘User Accounts’ directly from Control panel.
Select the appropriate UAC security level you wanted in Windows 7 Computer. Find out the explanation for each level in the last picture.