Networking :: Wireless and the /etc/networkinterfaces file

Code Sample

iwconfig eth0 essid THEASSECCPOINTNAME key restricted MY16DIGIT_KEY mode managed nick linuxLaptop channel 7; pump -i eth0

How do I convert ^ this line to the /etc/network/interfaces file? - so it comes up on boot.

offtopic: Also, booting is slow (i.e. takes 50sec but needs to be instant, how can I improve that?

original here.