upgrading windows xp installation

[raulz79]

Hi boy, I have a question to you.

I made an unattended windows xp installation cd using nlite 0.44.2. The cd works well when doing an installation on vergin hard disk. But, I have to do, for some reason, an upgrade of a windows xp system (installed with my unattended cd) with the unattended cd. The result is that the unattended cd can't copy my integrated drivers and it seems to install integrated hotfixes but if I run Windows update they results unistalled. So, my question is, there is a way to tell my unattended xp cd install device drivers and hotfixes when it goes in upgrade installation? Or should I modify svcpack.inf or other init file?

Any respone will be appreciated, thanks very much..