manual focus or rather infinte focus
fixed iso preferably low as possible
fixed apeture, again go as low as you can rich detail and depth of field.
i use PS and it warns to ensure plenty of overlap.
some software will ask you to decide how to put it to together eg. curved perspective, collage etc
best to just put lots of multiple photos overlapping and come out with an irregular shaped photo. then you can crop it to a rectangular shape.
above all else, practice on some thing smal, back garden etc and play with the results to get a feel for how it should turn out.
and look on flickr
