To get to the download section for drivers:
i. Go to
Dell support site;
ii. Select
Home and Home Office, and on this new page login to your account (or register by following the links);
iii. Now select
Downloads located on the right of your 'homepage';
iv. Now you will now find two boxes. You can either enter your service tag, or select your system from the drop box below that.
v. Now select "All" from the first drop box, your OS from the second and OS language from the last. Press
Go.
vi. Now you may select from the clearly labelled options for each appropriate driver.
vii. Download and install or burn any ones that you are missing from the included drivers and utilities CD, or that are newer than the ones on the CD.
Also, to keep abreast (hehe) of the latest Dell Driver, Bios and Software Updates then check out
DELL-Machina's fabulous thread periodically for these latest updates which include links! Thanks Machina

Just a quick list of drivers that you will need:
-> Chipset (either from Dell or Intel.com)
-> Modem
-> Network
-> Wireless (if applicable)
-> Audio
-> Touchpad
-> Video (I prefer Omega, discussed later on)
-> Dell system software (not essential but has the latest bug/ stability fixes...)