I just did some digging from a post I did on a newsgroup a bit ago...

code:
if /i %OS% == Windows_NT goto WINNT
GOTO :WIN9X

:WINNT
SET SYSDIR=%WINDIR%\SYSTEM32
VER | FIND /I "2000" > NUL
IF NOT %ERRORLEVEL% EQU 1 GOTO IS2000
VER | FIND /I "NT" > NUL
IF NOT %ERRORLEVEL% EQU 1 GOTO ISNT

:IS2000
SET $A = XCOPY /Y
Set Type=S&net start |find "Terminal" && set Type=T && goto FILECHK
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