CVS on Windows

[clauzel]

I can create a module with local repository with JBuider3.5 CVS 
client for win32 that I downloaded from www.cyclic.com. 
- But I wonder if it's a good use. I checked out module on another 
machine and I could modify, check in and so on. Is it possible to 
lock a file for a user so that others will not be able to modify it 
or is just with server repository? 
- In JB3.5, there is no way to configure CVS, we have just basic 
functionalities... Will use of WinCVS be a better solution?
- We have only NT servers. I read that a CVS server exits on 
www.cvsnt.org. What about it?
If we choose CVS, will it be possible to retrieve our PVCS archives 
to put them in CVS?