I already have two operating system Windows XP and Windows Vista. I heard unbuntu have more security than XP and Vista. Can i install unbuntu with windows XP and Vista?Thanks in advance.
From my experience with unbuntu is don't really worth it, seriously, Linux can turn out to be very complicated and very boring I may add. Ubuntu also lets you boot directly from CD (older versions did) so I recommend you to just boot from the CD at first to take a look at ubuntu and "feel" the OS a little before you start to actually install it. Its grate that they have this option, I sometimes us the CD to repair windows based computers that stopped booting a new windows CD. With ubuntu I have a hole OS available just by inserting the CD, it lets me format everything when things are to messed up to fix.