Manually Starting the IGS

Hi

I am running NW04 on Windows server 2003 64bit\MS SQL 2005, we are having some problems with the IGS not running correctly and giving incorrect information when I ran ABAP GRAPHICS_IGS_ADMIN, so I did an end process on the IGSWD.EXE process and the other IGS processes stopped.

How do I restart the IGS? looking at the start profile I tried the command :

IGSWD.exe -mode=all -sysname=<SID> -sysno=00

ran from

\usr\sap\<SID>\DVEBMGS00\igs\bin

but this gives the error

Configuration file could not be read!

The IGS.xml file looks ok, what is the standard process for manually starting the IGS ?

Thanks for any help.