problem with Like Button please IN FACEBOOK

[yolop]

hi

i tried to use with

Like Button

http://developers.facebook.com/docs/reference/plugins/like

and i see in the other site that they have when they click on "like" box to write somthing like here:

http://up203.siz.co.il/up3/2tmmynmfu5m0.gif

 

i tried to use with  Like Button  and that ok but i dont succsed to do this box

 

so i thing that if i  register on here

http://developers.facebook.com/setup/

this may be work

but always i treid to  register  i see HTTP 500 Internal Server Error or inviled link

 

what can i do? i want to see this box

http://up203.siz.co.il/up3/2tmmynmfu5m0.gif

on my site

 

thank