i just installed a 120 gig harddrive and need help to format the drive

[CLEARICE01]

i just installed a 120 gig hardrive and i never have formated a hd before and need help iam using xp pro my main harddrive is a 40 gig and the 120 as my storage hd.every thing is already setup.i just need help to format the 120 hd.iam using partition magic and i just want to split the 120 in half and have 60 gigs and 60 gigs.eny help would be greatly appreciated........