How to multisample FBOS - opengl

Question

Notice: I am using LWJGL.
Here is my code for creating a new FBO:
/**
* Creates a new FBO.
* #param width The width of the FBO to create.
* #param height The height of the FBO to create.
* #return an int[] array containing the buffer IDs in the
* following order: {frameBufferID, colorBufferID (texture), depthBufferID}.
*/
public static int[] newFBO(int width, int height) {
int[] out = new int[3];
out[0] = glGenFramebuffersEXT();
out[1] = glGenTextures();
out[2] = glGenRenderbuffersEXT();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, out[0]);
glBindTexture(GL_TEXTURE_2D, out[1]);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, org.lwjgl.opengl.GL12.GL_TEXTURE_MAX_LEVEL,20);
glTexParameteri(GL_TEXTURE_2D, GL14.GL_GENERATE_MIPMAP,GL_TRUE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,GL_RGBA, GL_INT, (java.nio.ByteBuffer) null);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,GL_COLOR_ATTACHMENT0_EXT,GL_TEXTURE_2D, out[1], 0);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, out[2]);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL14.GL_DEPTH_COMPONENT24, width, height);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,GL_DEPTH_ATTACHMENT_EXT,GL_RENDERBUFFER_EXT, out[2]);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
return out;
}
Here is how I draw the FBO to the screen:
public static void rectOnScreen(int tex) {
glBindTexture(GL_TEXTURE_2D, tex);
glDisable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glLoadIdentity();
glBegin(GL_QUADS);
glTexCoord2f(0, 0);
glVertex2f(-1, -1);
glTexCoord2f(0, 1);
glVertex2f(-1, 1);
glTexCoord2f(1, 1);
glVertex2f(1, 1);
glTexCoord2f(1, 0);
glVertex2f(1, -1);
glEnd();
glDisable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
}
Basically, I use out[2] as the argument for that function.
Now, how do I apply multisampling here? I don't really like the jaggedish look of the results I'm getting. I want to take multiple samples of the FBO when I draw it. I would be very happy to get the code written out, but I guess a link to a tutorial or something is fine too.