Hey all,
It's actually called a blue note, which is kind of in between. I have a tutorial on string bending, and explain the concept of it. It may help if you know more about it, instead of just doing it. This tutorial covers bending positions on the 2nd string, and there are also some useful tips.

http://www.guitartricks.com/tutorial.php?input=628

Let me know if this helps, and then you can go to the bends on the 3rd string.

http://www.guitartricks.com/tutorial.php?input=889

Then there is also part 2 of bending the 3rd string. String bending is one of my favorite things to do, and after I understood the concept it became much easier for me.

http://www.guitartricks.com/tutorial.php?input=931

These lessons may seem more country than anything else, but everything in these tutorials can be used in any genre. Just check them out, and let me know if I can be of more help to you.