[GRASSLIST:3288] Starting Grass 5.0

Hi,
I have written the following batch (grass5start.bat) file to run Grass5 inside Cygwin on an XP Pro box:

echo off
echo.
echo This batch program
echo starts GRASS5.
echo written by Mike Francis.
echo.
echo off
:begin
set export DISPLAY=127.0.0.1:0
XWin -multiwindow -clipboard &
start C:\cygwin\user\local\bin\grass5
set d.mon x0
start c:\cygwin\user\local\bin\tcltkgrass &

However, my paltry knowledge of batch files has let me down - it stalls at 'start ... grass5'

I wonder if anyone can help out with some advice?

Many thanks,
Mike