e4300 pci serial port driver vista

I just received an e4300 in the mail from the dell outlet on friday. So far I like this computer. It came with xp installed on it and I wanted vista. Got rid of the 80gb 5400 rpm drive and put in a wd 320gb 7200rpm drive and installed vista business 32 bit. I have all of the drivers figured out except for the pci serial port driver. Honestly I don't even know what that would be for since it does not have a serial port. I just know that in the device manager it says I am missing the driver, and it bugs me. If someone could help it would be greatly appreciated.

 

Did you get a Dell drivers CD? If so, you can put it in, then go to device manager and select search for driver on the CD.