DSL-N :: Saving Setting to a USB drive

Sorry that it seems so simple, but could someone tell me the easiest way to backup my DSL-N settings so when i reboot i don't loose everything. The Help didn't really tell me HOW to it up. only what to change to backup and load..
Please Help!

I think i may have figured it out....
Under control panel > backup/restore i put in sda5 (sda is my usb drive and i have a few partitions on it. usually it would be sda1) AND then i clicked backup. When shutting down, it said writing backup to /dev/sda5 and on startup it said loading backup from /dev/sda5.
Can someone reply to say this is the way to do it. (i'm not that sure) Thanks!