why com2sec group ... are unknown tokens

hi all,

I have installed net-snmp-5.4.2.1 on my compuer(the os is windows xp sp2)
and rewrite the snmp.conf file. when I run the instructions in file
c:\usr\bin.
such as snmpget. it always print the following warings:
------------------------------------------------------------
C:\usr\bin>snmpget -v 1 -c public localhost sysDescr.0
C:/usr/etc/snmp/snmp.conf: line 61: Warning: Unknown token: com2sec.
C:/usr/etc/snmp/snmp.conf: line 62: Warning: Unknown token: com2sec.
C:/usr/etc/snmp/snmp.conf: line 68: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 69: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 70: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 71: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 72: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 73: Warning: Unknown token: group.
C:/usr/etc/snmp/snmp.conf: line 79: Warning: Unknown token: view.
C:/usr/etc/snmp/snmp.conf: line 86: Warning: Unknown token: access.
C:/usr/etc/snmp/snmp.conf: line 87: Warning: Unknown token: access.
C:/usr/etc/snmp/snmp.conf: line 103: Warning: Unknown token: syslocation.
C:/usr/etc/snmp/snmp.conf: line 104: Warning: Unknown token: syscontact.
C:/usr/etc/snmp/snmp.conf: line 138: Warning: Unknown token: proc.
C:/usr/etc/snmp/snmp.conf: line 141: Warning: Unknown token: proc.
C:/usr/etc/snmp/snmp.conf: line 144: Warning: Unknown token: proc.
C:/usr/etc/snmp/snmp.conf: line 202: Warning: Unknown token: exec.
C:/usr/etc/snmp/snmp.conf: line 253: Warning: Unknown token: disk.
C:/usr/etc/snmp/snmp.conf: line 282: Warning: Unknown token: load.
Timeout: No Response from localhost.
-------------------------------------------------------------------

the 60-79 lines in snmp.conf is:
-------------------------------------------------------------------
#       sec.name  source          community
com2sec local     127.0.0.1       public
com2sec mynetwork 192.168.1.101   public
####
# Second, map the security names into group names:

#             sec.model  sec.name
group MyRWGroup v1         local
group MyRWGroup v2c        local
group MyRWGroup usm        local
group MyROGroup v1         mynetwork
group MyROGroup v2c        mynetwork
group MyROGroup usm        mynetwork

####
# Third, create a view for us to let the groups have rights to:

#           incl/excl subtree                          mask
view all    included  .1                               80
--------------------------------------------------------------
 why there are those warnings, and why No response from the localhost
(I have register the agent service through the  shortcuts in the Start menu
for

"register agent service").

Could anyone help me? your help will be apprecicated!

Thanks!

-- 
Fei Tan

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