win2k format

i have a maxtor 160 hard drive and i recently just purchased the abit nf7-s and xp2500+ cpu but basically i want to format my maxtor before i install my new motherboard and cpu. i open up my command promt and try and format and it says this "Format cant run b/c it is in use by another process. Format may run if this volume is dismounted first. And so I try that and it gives me this. Cant lock the drive, it is still in use. I know in 98 I can just restart in DOS but WIN2k doesnt have that option. I am just wondering what I need to do so I can format my hd before I install everything. Thanks.

sorry about the double posts guys.

why dont you just boot from cd...and reinstall windows...format it there? you need to reinstall windows anyways, might as well do that.