QUOTE(CapeG @ May 8 2007, 01:50 PM)

I am flying back to the UK tomorrow for the first time since i got here last year. I have a K3 visa which i know is multi entry, my question though is should i bring anything with me for when i re-enter the US
Your K-3 visa stamp should be enough, but to be sure you can always take all the documentation your have relating to the K-3 with you as well (approval notices etc).
QUOTE
and do i have to fill out a new I-94?
Yes.