Which one to choose in GRUB??

[Dolda2000]

That should be right, yes.

In any event, you can try out the commands before you write into the config file. When in the GRUB menu, just type a C and you'll get to the GRUB command line. Then just type in the commands and see if they work, except you can't enter the "title" line, and you have to end it with the "boot" command (which is implied when commands are stored in the config file).

[Nano]

ok I had changed my booting configure to this

title Windows XP
     map (hd0)(hd1)
     map (hd1)(hd0)
     root (hd1,0)
     chainloader (hd1,0)+1

but when I try to boot it by that, it says "Error 13: Unreconized device string"........
did I put it right? I add that map thing because I read from other posts said that we need that to trick windows or something, I am just shoooting at the dirt lol

[Dolda2000]

You need spaces between the device strings to the map command, like this:

title Windows XP
     map (hd0) (hd1)
     map (hd1) (hd0)
     root (hd1,0)
     chainloader (hd1,0)+1