I just have a small problem while installing Windows XP using this unattended cd..

Though I have followed every instruction in your tutorial, I get the same thing every time I try to install , i.e

Though I have set time zone as (GMT +05:30) Chennai, Kolkatta, Mumbai, New Delhi, during the creation of the cd using nlite,

I will be asked again to select time zone during installation process. I tried creating a new cd image but the same problem exists everytime..

I really don't know what to do. Please help me with this.

Check your nlite output. Open ..\YOURCDFOLDER\I386\WINNT.SIF and look for Timezone setting under the section [GuiUnattended]. I think it should be set to Timezone=190 (India time). Fix it if it doesn't. And don't post this file here, it has private info.