64 bit rendering???

Hi,

Right first off, how are you all hope you had a nice christmas and new 
year...
Onto the subject, I'm using blender on fedora 64 and have these 
questions : -

1. Does blender render in 64 bits or just 32 as normal?
2. Can you get sunflow to work with this solution (got the python 
script converting output no probs;) but not running with java and er 
fedora )
3. How come Yafray dosen't work in Fedora 64 and blender internal does?
4. Not a question this time but a big thankyou to everyone involved 
with blender for making it possible for a happless soul like me to get 
involved with such a godsend of a package, cheers....

Marty out...