i need something in a language that i can understand. again, can anyone tell me how to reformat a drive in linux?
And yet, you fail to specify this in your initial post. Seriously dude, a little self help here.
In any case, assuming you're still playing around with Ubuntu, you should be able run gparted via System -> Administration -> Gnome Partition Editor. If it's not there, you can install it via System -> Administration ->Synaptic.
You may have to remove the partition and re-add it and flag it to format, but you should be able to simply format it from there.
If you're looking to do this via a command prompt, you'll want to know what kind of partitions you have. If you're using ext2 or ext3, you'll be using mke2fs. Clearly if you're using a Rieser file system, you'll use mkreiserfs instead.
Since your screenshots reflect you're using ext3, you'll want to use mke2fs. Once you have that done, you'll want to edit your fstab so this thing mounts permanently, but you should be able to test by manually mounting the partition via the command
Mount /dev/sda3 (of whatever the disk you formated was)
btw: fdisk -l should list all the partitions you have currently. You will need to repartition this, so before anyone can start to explain how to partition this through a command proompt, you'll want to post the output of fdisk -l as you will need to remove the partition and then recreate it. Personally, I'd still be using the gnome partition manager