windows nt 4.0 check disk

Hi,
I would like to check my hard drives for any errors on a windows nt4.0 server.I would like to do this once every two weeks(approx.). I was told I could run check disk.How do I run check disk and do I need to use any switches.
Also can anybody tell me approx. how long this might run, on a raid 5(43gigs total) and 3 (4 gigs).
Thank You