ok there's some confusion here... lets do it again. one step somewhere is causing the whole thing to mess up! as ananth said.. u need to delete sda7, 8, 9. but now don't do it thru ubuntu. do it thru windows. boot into ur windows and goto disk management. now right click on these partitions (except the fat32 other linux paritions will be shown as unrecognised, but it lets u delete the parition anyway). delete these 3 partitions. now u should haf full free unpartitioned space after ur 9gb fat32 partition.
now proceed to the ubuntu install. when u come to partitioning, select manual partition. hmmmm... i'm feeling too lazy to type... here follow this guide for further steps.
step 1: *www.easy-ubuntu-linux.com/ubuntu-installation-606-9.html (this guide assumes u start wid an empty hdd, however ur system already has fat32 and ntfs partitions, hence the unallocated space will be shown in as the last entry). let the size of this 'first' ubuntu partition be about 7500mb.
skip the next page there and treat this as step 2: *www.easy-ubuntu-linux.com/ubuntu-installation-606-11.html... here give all the remaining space as swap partition.
step 3: now specify the mount points as shown here: *www.easy-ubuntu-linux.com/ubuntu-installation-606-12.html
the changes for ur system are: the 7.5gb partition has the mount point '/' in ur system (instead of the 3gb shown in the pic) and the remaining space of about 500mb is ur linux swap. the /home mount point doesnt exist for ur system. don't bother about it.
apple the mount points for only these two partitions and do not touch anything else. proceed forward.
in the last screen ensure this in 'Advanced...': *img519.imageshack.us/my.php?image=feistydual18cv5.png now proceed wid the installation.