Ok thanks for your speedy reply ;D. I have checked the boot.ini file here is a copy of it

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS=“Microsoft Windows XP Professional” /noexecute=optin /fastdetect

I see there is no /noguiboot option in the file to delete.