The second post in this thread:
http://www.pprune.org/forums/showthread.php?t=220877
contains a link to details on the requirements for JAR STD 1A level A,B,C and D 'simulators'. There's a summary table on page 12.
For the FAA version, you should be able to go to
www.faa.gov, go to the current list of advisory circulars and check out AC 120-40B:
http://www.airweb.faa.gov/Regulatory...A?OpenDocument
which is the FAAs guidance for sim qualification. The rules are fairly similar, though, as you'd expect.