All of the aforementioned web sites are good places to start; In addition, I would add:

http://www.macsween.co.uk/burns-nigh...-a-burnd-night

http://www.bbc.co.uk/robertburns/bur...ng_order.shtml

In addition, a copy of the late Hugh Douglas's Burns Supper Companion is a must for any organiser. I'm not sure if it's still print, but there may be copies on ebay, alibris, etc. Douglas was a noted Burnsian and his guidebook is highly recommended.

For entertainment, I would recomend a friend of mine's DVD (shameless plug):

www.robertburnslive.co.uk

I'll add some more thoughts later...

T.