Ive been given an old computer by my mum, as they've just upgraded all the systems at work and its ideal for my 2 young children.

Trouble is the hard drive has admin settings that allowed it to be accessed by several people on a network server via the log ins, and i dont think my 18 month and 3 yr old will get on too well with the log ins

Is there any way of being to format the whole drive and do a fresh install???

any thoughts???

Cheers