you should see the options under wireless security in your web based setup of your router. WEP is an encrypted code which is stamped on the packets of data sent via the wireless. Usually u'll have the option to generate the WEP key via passphrase. Say you enter in 1234 as your passphrase it'll generate a 64-Bit WEP key 759478362C . Then you put in under the settings on your laptop that the wireless network your using uses WEP encryption, and type in the passkey. It'll hold this setting so you only have to do it once.
with the MAC address, you'll have a setting again under wireless security to allow only certain MAC address's to access u'r wireless network. You just enter in the MAC address of your PCMCIA/PCI wireless network card(it should be printed on the card)... and that means that only that card can access u'r wireless.
hope this is clear.. any questions just ask.
el
