I am about to apply PTF 1 to my V3.1 server on NT.  The problem is I am not
sure which files I need.
I have a choice of either:
a)  v3ntp1sb.exe  -- the ptf4 distribution package for SBCS languages
or
b)  v3ntp1mb.exe  -- the ptf4 distribution package for MBCS languages

What is SBCS and MBCS?  And, how do I know which to use?  The text file
doesn't really clarify this.

Any help is appreciated!