[Spambayes] Problem with POP3 Proxy: [Classification tokens "spam", "unsure" not unique]

[gtippery at comcast.net]

I am using SpamBayes POP3 Proxy Version 1.0rc1 (May 2004) (binary),
with version 2.3.3 (#51, Feb 13 2004, 14:39:56) [MSC v.1200 32 bit
(Intel)] of Python; my operating system is Windows 5.1.2600.2 (Service
Pack 1).  I have trained 243 ham and 817 spam.
 
I'm using MSOE, sorting on the Subject header.  Some real emails have
the words "spam" or "unsure" in the subjects.  Can the inserted tokens
be changed to some rare or made-up "words"?  I'm brand new at this and
may be missing some easy option...