hi all....
i have bought a new lappy....sony vaio
i got windows7 pre-installed in lappy along with some vaio care...
the whole hard disk is set to single partition...in which the windows is installed...
now ,i would like to dual boot... windows 7 and ubuntu...

i want to install Ubuntu ...without changes to windows 7!!
i dont want to re-install windows 7...coz..i dont have a genuine copy and vaio drivers!!
is this possible??
if yes...how?
please explain....