Imstalling internal card reader

Hi jmarie, If you have the standared Dimension 3100 it did not come with a floppy drive. If so you can buy a Sabrent Internal 64-in-1 Multi Flash Media Card Reader - USB 2.0, Black, 3.5", Self Powered, SDHC Support, Vista ready reader that fits in your emty floppy drive. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1871218&CatId=962
Your dell does not have a free 5-pin male USB connector on the motherboard. So you'll also need a Sabrent SBT-FWPH USB 2.0/Firewire 1394 8 Ports PCI Card Internal Combo Hub.
Included, Free Standard Shipping. Here: http://www.meritline.com/3-port-firewire-5-port-usb-2-0-combo-pci-card.html
The card reader will plug into the internal USB 2.0 Sabrent. You will gain four USB plugs & two 1394 plugs. Once you see the pictures you will understand. Bottom line everything will be inside the PC.
Or you can use the external as computafixa suggested for half the cost. Click the link to see:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3603298&body=MAIN#detailspecs
It's up too you jmarie!

Well, installing an internal card reader without a spot on the motherboard, is a little hard to do. I would suggest buying an external card reader. They are a little cheaper, and a lot easier to setup and use, since they just connect to a USB port which all computers have.