You didn't need to add "boot", that is only necessary if you are starting the OS from the grub prompt, and not from a predefined set of lines.
One thing you can try, is to first get your windows XP boot loader back (NTLDR), by booting into the XP CD, going to recovery console, and typing "fixmbr". Later on, you can make the NT loader boot linux (see the tips and tricks section for details).
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Hardware - Celeron 266 MHz, 128MB RAM, Intel i740 8MB RAM
Software - Slackware Linux 10.1; Archlinux 0.7; Windows 98 SE
Humanware - GS/CS C++ L+++ w b+++ DI+ D+ e
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