[cvsnt] i want help to lock multiple checkout

[mqaiserm at qualitycheckinc.com]

Hi !

  i want to use cvsnt on server and wincvs as client.

  i need help that how i can set no multiple checkouts on
  a repository.

  i want to create a repository and also i want to set that
  only one person can do checkout at a time.

  what i can do. plz help me in this matter.