Keep all documentation and disks that come with your card. If your computer doesn't have built-in Ethernet, has no open slots to add a card, but does have a USB connector, you can get Ethernet through a USB adapter. Professional installation - Have the card installed by an authorized computer professional. This is the best option as it assures proper installation. If possible, get your card installed before you arrive on campus.
Most ether cards are easy to install.
If you are comfortable opening up your computer, you can save on the cost of a professional installation. Check with your computer maker to make sure this won't void your computer's warranty. Having an RCA install your card may void your computer's warranty since RCAs are student employees, not professional technicians. To have an RCA install your card you will first have to sign a Waiver of Liability form. You must also be present during the entire appointment.