Multiple connections for one NIC

Is there some what to create multiple networking connections from one networking device?
I have my router secured, but I don't want to have to go through the hassel of re-entering the IP, gateway, DNS, ect. each time I come back from a LAN.
Oh, and I'm running Win XP Pro

DHCP MOTHEFUCKER, DO YOU USE IT?

>>2
never heard of it. elaborate?

>>3
DHCP is a protocol for clients to automatically receive TCP/IP configuration (IP, subnet mask, DNS) from a DHCP server in a network. If you have a DHCP server (hint: most routers, all wireless access points, etc.) at every place and set your TCP/IP configuration in Windows to "Obtain an address automatically" or whatever it's called in English, and enable the DHCP client service in services.msc, you'll be able to move anywhere with a DHCP server without worrying about configuration.

>>2
>>3
Wow. The OP really likes doing things the hard way?

>>5
shit, forgot my sage

>>4 anonymous forgives (wtf)

dynamic host control protocol

>>7
I was feeling particularly nice; now I covered my nice quota for a week so I'll be an asshole.

>>2
Ok, I guess I didn't exactly explain well enough, so thats my fault, sorry.
What I ment was with encryptions.
I'd like to have my home wireless encryted, but I don't want to have to set it back up every time I leave and return from a LAN, or use some wireless access point.

>>9

Actually the idea behind that thar encryption stuff is that someone can't just drive up and connect to your network in a heartbeat.If I just didn't lock up when I left for work in the morning, but, for me the minor inconvenience of fishing around for my keys and using them to unlock the door is worth it.