Greetings,
Before you make any permanent changes within your bootloader's conf file you can try :
su root|grub|reboot
when grub appears you ( with all you've heard before from the other guy)
root (hd0,x)
setup(hd0,x)
*kernel=/boot/vmlinuz
*initrd=/boot/initrd
chainloader (hd0,x)+1 ( or +21 +22 ) and check if you can load windows
You know,the manual way
Farewell