thanks T, NK and sumit.
i will try this over the weekend. but i would still want Ubuntu on D: /
the screenshot is here: *i34.tinypic.com/2eovh9t.jpg
so if i wud want it on D:/ drive..
as i understand.. before starting the installation with the CD..
i go to computer management... disk managment.. >> delete D:/ drive
(proceed with installation of ubuntu...)
.....Select free space and click on the "New Partition"
...Select type of partition LoGICAL, size 1.5 times your RAM(1024 in my case; or shud it be 3 GB?)
...location for new partition "Begining"
..Use as: "swap area" and click OK
Again select free space and click New Partition. Select type of partition logical, size 8000 MB or more, location for new partition Begining, Use as: Ext 3 journaling file system, mount point: / and click OK
and so on...
right?