set path in autoexec.nt

[summi]

I upgrade my PC to windows 2000.I want to add path of jdk1.3 in autoexec file.There are two autoexec files.one is present in WINNT\system32 and other is in WINNT\repair.Contents of these file are as follows:

@echo off

REM AUTOEXEC.BAT is not used to initialize the MS-DOS environment.
REM AUTOEXEC.NT is used to initialize the MS-DOS environment unless a
REM different startup file is specified in an application's PIF.

REM Install CD ROM extensions
lh %SystemRoot%\system32\mscdexnt.exe

REM Install network redirector (load before dosx.exe)
lh %SystemRoot%\system32\redir

REM Install DPMI support
lh %SystemRoot%\system32\dosx

please suggest me how can i add path in this file and in what format.jdk1.3 is installed in c:\jdk1.3.There is no autoexec.bat file.
Thanks