2) Right click and select Properties
3) Select HTTP Headers tab and you should be able to see a custom HTTP Header called "MicrosoftSharePointTeamServices" with a version number by its side.
4) Compare with table below to see what updates for MOSS your farm has installed:
- MOSS 20071 or WSS 3.0 Cumulative update (KB956056 & KB956057) 12.0.0.6327
- MOSS 20071 or WSS 3.0 Infrastructure Update (KB951695 & KB951297) 12.0.0.6318
- MOSS 20071 or WSS 3.0 post-SP1 hotfix (KB948945) 12.0.0.6303
- MOSS 20071 or WSS 3.0 post-SP1 hotfix (KB941274) 12.0.0.6301
- MOSS 20071 or WSS 3.0 post-SP1 hotfix (KB941422) 12.0.0.6300
- MOSS 20071 or WSS 3.0 SP1 12.0.0.6219
- MOSS 20071 or WSS 3.0 October public update 12.0.0.6039
- MOSS 20071 or WSS 3.0 August 24, 2007 hotfix package 12.0.0.6036
- MOSS 20071 or WSS 3.0 RTM 12.0.0.4518
- MOSS 20071 or WSS 3.0 Beta 2 TR: 12.0.0.4407
- MOSS 20071 or WSS 3.0 Beta 2: 12.0.0.4017
- Office 12 (PDC image - pre-beta): 12.0.0.3111 (This version of Office does not have a support link in the Add/Remove programs dialog box).
