Hi Gav
the best way to use Birdie2000, is with its own BirdiePrefs.
Anyway, try to put this line in your User-Startup:
Run >NIL: C:birdie Path:yourimage.iff
where "Path:yourimage.iff" is the pattern you wish.
Check that RUN and BIRDIE are present in your C: dir
If you prefer to use BirdiePrefs, download:
BirdiePrefsinstall it and put this line in User-Startup:
Run >NIL: C:birdie ?
Open BirdiePrefs, chose the desired pattern/s and save.
Ciao