I want to change from a wired network to a wireless. I presently have a Linksys BEFSR41 with two computers networked. I will leave them connected the same and add a laptop as a wireless. I am going to change to a Linksys BEFW11S4. My question is can I just unplug the old one and plug in the new one and only have to configure the laptop for the wireless connection or will I have do remove the old software software and reinstall everything?