I want to include in my content type a CCK "Select List" field. Which module(s) should I enable so as to have it as a choice? Thanks
You have to enabled Option Widgets, as well as Number and/or Text.
Create a new field by going to admin/content/node-type/%content-type%/fields (where %content-type% is the machine name of your content type)
Create a new field. If you enabled Text module, you have the option of Text. If you enabled Number, then you have the option of Decimal, Float and Integer.
Select the Operations you want
Clicking Save will take to the Field setting page. Scroll down to the bottom and type in the allow values for your option widget.
And you are done.