Plugin for openfire 3.7.1

hello all

i install open fire 3.7.1 and it work grate for me

but when i need to add some plugins like "sip.jar" , "userImportExport.jar " e.t.

they wont apeare in openfire plugin  console .....

i want to know plugins for each version of openfire is special ?

if answer is yes where i can find openfire 3.7.1 plugins

and if answer is no how can add this plugin to my server