Im new to the wireless internet thing and im trying to get started can someone help me with some advice?

my dell inspiron 1501 has a wireless card slot protector that i have to take out to place the wireless card in there. well the wireless card protector is shaped weird. do i need to get a card that is shaped like that? if so where can i get that type of card? it is as long as a regular card but has one corner taken out. the corner removed is about 1 long x 1/2 wide (all in inches). any advice is greatly appreciate.Im new to the wireless internet thing and im trying to get started can someone help me with some advice?
If you bought the 1501 from Dell, you should have the following item installed





Dell Wireless 1390 802.11g Mini Card (54Mbps)





Check your Device Manager or your Network connection to see if you have any Wireless device installed.





I don't know if this model has any external card slot, if so, you can always run down to Fry's to get a wide variety of PCM/CIA type of wireless network card.





Finally, make sure you have an Access point - at home you would need a wireless router that will hook up to your cable or DSL modem - configuration would not be easy follow instruction carefully and don't forget to encrypt your access point. Good luck