Is there any hints on which services I can disable when creating my Vista lite .iso?

you can get information on this website http://www.blackviper.com/WinVista/servicecfg.htm

Wow thanks a lot. I appreciate it

Heres the guide I use:

http://www.speedyvista.com/services.php

The big answer is that there is no single list. It all depends on what you are going to use your system for, how it's going to be used, and how it's connected to the internet.