tcl plugin (again)

[Nikolai 'pcp' Weibull]

ok...i've been wokring a bit on the tcl plugin i've been talking
about...but i was wondering a bit. there's a plugin directory, and all
the files there seem to be #include <irssi-plugin.h> but i can't seem to
locate the file. what should i do?
-- 
/*
 * Name:     Nikolai Weibull
 * Nicks:    pcp, pcppopper
 * E-Mail:   [EMAIL PROTECTED], [EMAIL PROTECTED]
 * Homepage: http://www.pcppopper.org
 * System:   Midi ATX, ASUS CUV4X, Celeron 667@950, GeForce2 MX 32,
 *           256mb PC133, Fujitsu 20.49gb UDMA-66
 */