Networking Woes

I recently setup my WiFi card with ndiswrapper so now I have one ethernet card, one WiFi card, and one modem on my laptop. I need to switch between each of these devices depending on where I am. The problem is that in order for me to do this I have to go into redhat-network-config deactivate what ever im using check under profile the device I want to use and check off the device I dont want to use then active the device I want to use. This gets very annoying. What I want to do is have my system so automaticly it brings up eth0(when I boot and when im going to do something) if I want to goto my WiFi card all I have to do is ifdown eth0 && ifup wlan0. Is there a way to do this with this hole profile thing? Also when I was playing with the profile I created two new ones other then common and it wont let me delete them, how can I delete them?

Thanks

nuke