Hello all. New to the site and I have a question. I just bought a cheap desktop for the sole purpose of hooking it up to my tv for a little internet surfing from the comfort of the lazy boy. Anyhow, I had planned to install a wifi card into it. I ran into a problem when I found no open pci expansion slots. I know there are usb wifi adapters, but I have already purchased the card. So, plan b: remove the modem and replace it with the wifi card. What do I need to do before and after I remove & replace (settings, etc)? Thanks for the help.