Make A Batch File To Clean UR PC!!, All In One!!

Hello friends
Can any one pl edit this file for me.
The problem is when i reinstall windows, my id changes from
admin to admin.windows or administrator.whatever
I want %% to be used so that the batchfile can locate the
Windows XP directory and my documents and settings folder.

Any help will be appreciated.

*********************************************
@echo off

if %username% == Administrator.WINDOWS goto admin

REM ** Delete User Files **

rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Recent"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\Temp"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\History\History.ie5"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\Temporary Internet Files\content.ie5"

goto end


:admin
REM ** Do some extra stuff here **
REM ** What ever you want..... **

ECHO You are a Administrator

rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Recent"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\Temp"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\History\History.ie5"
rmdir /S/Q "%systemdrive%\Documents and Settings\%username%\Local Settings\Temporary Internet Files\content.ie5"

REM ** Do more stuff here **
REM ** Blah, blah, blah......**


:end
exit