Muffin McMuff from Mullaghduff wrote:

Also...
Same bowls v separate bowls

Same litter tray (whilst '2-month-keep-his-cat-inside-period' is
happening) or different litter trays?

Definately give them separate bowls and litter boxes. Even cats that get
along well don't necessarily like to share these.

Here's another good page on introductions
http://www.maxshouse.com/introducing_cats.htm

Above all else, go slowly and let the cats set the pace for introductions.