Links
zMUD is a product from Zuggsoft designed to enhance play. Many features include triggers, aliases, and colour. A free version is available in addition to the current product, get it from www.zuggsoft.com
As far as web-graphics go, they are the daddies:
www.flamingtext.com
They have a superior graphics generation engine, and best of all, it's FREE!
The MUD Pack is a weekly comic strip about a pack of MUDders
(www.muds.co.uk)