desktop consists wallpaper nothing else

[frost151n]

hi, i seemed to have messed up my ubuntu somehow, so i am going to do what any selfrespecting lifetime windows user would do... uninstall and then reinstall!!!
problem is i dont know how to uninstall ubuntu!!!
can someone please help???

edit* i'm using an hp dv2700 with vista dual boot. i dont wanna touch the vista partition.

[Pumalite]

You can install on top of the old installation. Just go Manual and point to the right partitions. You can ignore /swap.

[frost151n]

eh?
im really sorry, but i've been using ubuntu for like a week!!!

[Pumalite]

Are you able to boot a Live CD?

[frost151n]

yes, i have 8.04.

[Pumalite]

Boot it. Go to the Terminal and post the output of:
sudo fdisk -lu
(Copy and paste here)

[frost151n]

ok,
i paste it tomorrow, my comps in the office

[frost151n]

Here...

ubuntu@ubuntu:~$ sudo fdisk -lu

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x0bddba0e

Device Boot Start End Blocks Id System
/dev/sda1 * 63 147379871 73689904+ 7 HPFS/NTFS
/dev/sda2 147380310 305765144 79192417+ 83 Linux
/dev/sda3 305765145 312576704 3405780 5 Extended
/dev/sda5 305765208 312576704 3405748+ 82 Linux swap / Solaris

[Pumalite]

At the Terminal:
sudo mkdir /media/sda2
sudo mount -t ext3 /dev/sda2 /media/sda2
Post:
cat /media/sda2/boot/grub/menu.lst