How to get the OS Version

Hey guys,
My team supports databases on about 75 different servers. I would like to know what OS Version is running on those server. I have done some research and I know I can use the following three methods:
1. master..xp_msver
or
2. master..xp_cmdshell 'netsh diag SHOW os /p'
or
3. select right(@.@.version, 44)

are there any other options out there? Option 2 gives me the output I would like, but takes a long time to return the result:
i.e.
Microsoft(R) Windows(R) Server 2003, Standard Edition
5.2.3790

xp_msver and @.@.version gives me the info, but not quite in the format I would like:
5.2 (3790)
and
Windows NT 5.2 (Build 3790: Service Pack 1)

Are there any other options out there?

Thanks,
ReghardtIs this a one time gathering of statistics, or an ongoing thing/ If you have SMS on your network, you can query some of their views much more effectively.|||It will be an ongoing thing, and yes we do have SMS. Thanks for the advice I have to remember to sometimes think outside the box.