Unfortunately, it does not.
Dell offers downloadable versions of the manuals for almost all of their products including the Dell Dimension 8400. A person can also call Dell directly and the company will send a manual for the Dell Dimension 8400. One should automatically come in the box when purchased.
Yes, it does have a microphone, as well as a built in webcam.
Yes
yes i have this laptop and it comes with a built in microphone as well
Yes.
The Dell Inspiron Model 531 does not include an integrated microphone. It does, however, have two 3.5mm jacks for microphone input (one in front and one in rear)
It has a microphone port. but no built in microphone into the laptop.
No. You will have to use an external microphone.
Yes, it's. You have to purchase either a PCI wireless card (you will have to open the computer case to install it) or USB wireless adapter (which is easier to install, just put it one of usb ports).
download the device driver at the manufacturer's website
Check the Dell website. If its a newer laptop chances are it has one unless its really cheap.
The microphone is located above the screen by the webcam.