Server.CreateObject("Word.Application") Call was rejected by callee.

I'm having a problem where I have two 2000 Adv Server boxes running IIS 5.0 and they host our websites. The site has a section for users to upload Word docs at which point they are opened and saved as HTML. One server works fine but the other generates this error...
Server object error 'ASP 0177 : 80010001'
Server.CreateObject Failed
Call was rejected by callee.
...the code is exactly the same on the other server and it works! I have looked into this and most, if not all, sites say it's Norton AV 2000 but we don't have that installed. We have Trend Micro Server Protect and I have already disabled this and it still generates this error. It happens when I try to create the object...
Set objWordApp = Server.CreateObject("Word.Application") which point it generates the above error. Help articles suggest that the App may be busy but we have restarted the server and still had this problem.
Anybody got any ideas? I think it might be permissions related but I'm not sure.
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are you certain that MS Word is actually installed on the server in question?
the versions of ms word must be the same and have the same updates.  i've learned the hard way.  i had 2003 installed and the clients had 2002 installed--not compatiable.
I answered the question.  I also had the same problem w/ my code--and this was my solution.
MancAndyAuthor Commented:
It was a permissions problem for the application.

Thanks for all your help, but none of you were right in this case.

Permissions had to be changed in dcomcnfg
PAQed with points refunded (125)

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