guys need help on creating new user account...

i tried this command useradd -m stalker

how do i input my password???

another newbie question,

i repartition my N900 flash... i shrink my 27gb MyDocs partition into 13.9gb and add 7 extended partitions with 2gb space per extended partitions... my extended partions mmcblk0p5 to mmcblk0p7 works fine and i can mount it... But partitions from mmcblk0p8 to mmcblk0p11 dont work or i cant mount ... Is there a limit or maximum number of extended partitions?