I can see what Onefish2 is saying, but I think he is a bit OT.
My strategy has been to:
(1) Take a back-up of the system as delivered to me by Dell so that I can go back if I want to do so.
(2) Play with the system for a while without worrying too much and delete/replace stuff until I am happy with the apps.
(3) Do a full reinstall of the OS, stripped drivers and just the apps I like.
FWIW: I have removed Norton, MS Works and Adobe Reader. I am using Avast!, Open Office and Tracker's PDF-XChange Viewer respectively instead. You sadly need to leave IE installed in order to get updates from MS, but I am using Firefox as my main browser.
I don't like the Dell video cam app, but I don't know what to use instead. Anyone?
I do like the desktop search stuff from Google, but not the widgets.