Problem in installing windows from pendrive

Hello der,
My problem is that i want to install windows-xp through pendrive and i followed the steps which has been given on the link provided by you. But i got fail after processing 7-8 steps. I made my pendrive bootable and then i copied windows files to it after that i restarted my system by sellecting the option boot from pendrive then there it started in windows-98 doss mode then i typed "sys d:" but nothing happened and i got "invalid drive specification" in responce(message). I tried many times making changes in bios setup but finally the result was same "invalid drive specification". The system could not be transfered. I have an intel orignal mother board, samsung 80gb hard disk and 1gb kingston pendrive. Plese guied me to complete this task.
Thanking you

Yours truely
Ashish Arora.