Thank you very for your time and highly valued suggestion. I tried both the methods:
1. Used the partitioner in ubuntu CD utself.
2. Used partition magic to create partition and then installed ubuntu.
But in both the cases I made the two partitions for linux:
1.ext3 partition for linux and made it primary.
2.swap partition for linux and also made it primary.
My question is that should both the partion be primary or anyone can be logical?
One more question ::: I have a laptop with vista home premium. I cannot use partition magic to make partion.
Now if I want to insatll linux along with vista how to do that. Can i use vistas own partitioner?
What is the difference between Vista home basic, vista home premium and vista professional? Which one is better. will u arrange in order of efficiency?