This is not with the Snort install, was with the Snort windows install document. It turns out there is a strange ASCII character in the PDF document so when you cut and paste the command line:
"c:\snort\bin\snort -i1 -s –l c:\snort\log\ -c c:\snort\etc\snort.conf -T"
it pastes an invalid character for the dash that appears in the "-T" parameter.
Hand-typed the command line instead of pasting it from the document, the command will work fine.