i have bought dell xps l502x

and i want to partition the hard disk how can i do that .can any body let me know the whole procedure????

further can any body tell me that there are two things listed under hard disk drives

1)os(c:) with 446gb

2)microsoft office click to run 2010(protected)(Q)

now i want to know what is this  "microsoft click to run 2010(protected)(Q)"  ?????