How can i make a wireless connection in the command line?

[Mark]

Hey,

i've just spens serveral hours finding out how i can make a wireless
connection but nothing seems to be working.
i tried this MANUAL:http://intellinuxwireless.org/?p=iwlwifi&n=HOWTO-iwlwifi
than starting from:  "Verify that you can scan and see access
points:". where it's going wrong is the key.. [1] is not working for
me.. i need to do s:theascikey and the last issue is that dhclient
doesn't want to give me an ip. it's attempting it a few times and than
it simply fails.

some information you might need:

My wlan adapter is:
Intel 3945AGB

Kernel version:
2.6.22 RC 7

Operating system:
Fedora 7

Desktop/Laptop:
Acer Aspire 5630 Notebook

Now the issue is not that i can't make a wireless connection.. i can
but just once every boot. I can make a wireless connection with
knetworkmanager BUT when that connection is lost than i need to reboot
to get connection again. is there a quicker solution for that?
(killall knetworkmanager and restart that won't help)

Another issue (with losing the connection) is that when my connection
strength is getting below 40/100 than the connection seems to be
lost... is there any way to put that on 10 or 20?

Now the real issue is that i'm not able to make a wireless network
connection with the command line. so my question is: how do i need to
make a wireless connection from the begin till the end?

When this is answered i will make a howto for it on the fedora forum.

Thanx,
Mark