Again: Insert text below other text

I need help with this please:
I have this text:

<li><a href="login.php">Ingresar</a>

and I need insert this text below:

<li><a href="http://localhost/dummysila/">anything<a></li>

help please!

Note: all this with bash....command sed I think....

Hasn't this been answered recently? Didn't you check previous posts?

awk '{ print }
/<li><a href="login.php">Ingresar<\/a>/ { 
 print "<li><a href=\"http://localhost/dummysila/\">anything<a></li>"
}'