Http LOCK method using ms-word

Hi all,
I'm trying to open a .doc file via MS-word that will be downloaded from my server.
I provide word with a url that maps to a servlet that should serve the file from a DB, and write it back to the client (MS-word).
The thing is that word sends to my server a request with "LOCK" method, which obviously is specific to microsoft and not a standard. I played around with it for a while and didn't get to any reasonable solution. I also tried googling around a bit for microsoft specifications or something (god I hate microsofts documentation, somehow I never understand anything from it) to see what kind of a response would be appropriate for that "LOCK" request, but found nothing usefull enough.....
I know this has nothing to do with java or servlets but I thought maybe one of you encountered this situation and has something usefull to tell me.....
thanks.

Oh yes, of course....
thats what happened first, when I simply didn't know word is going to send "LOCK" and not a simple "GET"... so what happened was that the response returned by the servlet was some kind of "bad request" status code, since the service method doesn't know the "LOCK" method. I don't remember what exactly status code that is, but word didn't like it and as a consequence tried some other http request that came up with no results.
What I did later on was to override the service method and return a specific status code (SC_BAD_REQUEST if I remember correctly) for that LOCK request. that response actualy got word to launch another nice "GET" http request that did serve up the file, the problem is it "hangs" on the lock response for about 10 seconds for some reason and sometimes doesn't work at all (couldn't quite figure out when exactly).
I looked around a bit more and this actualy is a WebDAV standard documented in a couple of RFCs. I need some kind of way to inform the client I don't support lock, I thought what I did was on that track, but as I've written, word doesn't like it....

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