help me make some cinema infoads dudes!

[blanka]

good evening, i have been lucky enough to be allowed access to the minds of late night movie patrons minds at my local arthouse cinema in brighton.

Preceding the late night showings are a bunch of old 35mm trailers, leaders, weird ads and all sorts of guff spliced up nice by me (a dream to do)
The management have been digging my eye trash and have asked me to spice up their coming soon/no smoking/ no phones/ shut up type stuff

my question is what is the workflow from sd (file or digi beta) to 35mm film?
(it has to end up 35mm to be spliced in with the ads)

thanks

bob