win2k server sp4.

I have read several articles saying that opportunistic locking SHOULD be
disabled... mostly surrounding file share based database apps like Access,
dbase, etc... I have also read the background info on what oplocks is about.
But, here is what I need before I can leave this alone and make a decision:

1) Ok, disabling can fix some issues... BUT can disabling oplocks cause
problems with other services? in particular, Active Directory, DNS server,
SQL Server 2000, DHCP service, WINS service?

2) what happens with regular file sharing when oplocks is disabled? for
example, if userA opens a Word document and begins working with it and then
userB opens the same document to work with what happens when:
a) second (or subsequent) users open the document? can they? if so, are they
warned that it is open by another user?
b) are they prevented from writting changes?
c) if they are not prevented from writing changes does that just mean last
write wins? (last save overwrites anything else someone else had done)

I would GREATLY appreciate answers to these questions. I have looked and so
far found no reason NOT to disable oplocks but I want to be sure. And I need
to know what changes to expect after the change so I can inform my users.

thanks.

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