CSS Tutorial- How to Create CSS3 Rounded Corners ?
Here you can see how to create rounded corners usign CSS3,here in this css3 rounded corner generator you need not write any code for rounded corner bt you need to assign your required values only.
Then you will get little bit of code for rounded corners, you can use that code for your rounded corener boxes in your website .
And find the link for CSS3 Rounded corener Generator http://cssround.com/