No, it's WinXP Pro with Office 2003 Pro.
I don't remember having any earlier office version on this PC.
Here is thee regsitry, maybe you can identify it:
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1033]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1033\Normal]
"Engine"="S:\\MSAPPS.97\\Proof\\Mssp232.dll"
"Dictionary"="S:\\MSAPPS.97\\Proof\\MSSP2_EN.LEX"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1033\Normal\Clients]
"C:\\Program Files\\Common Files\\Microsoft Shared\\PROOF\\Mssp232.dll"=""
"S:\\MSAPPS.97\\Proof\\Mssp232.dll"=""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1037]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1037\Normal]
"Engine"="S:\\MSAPPS.97\\Proof\\HSPELL32.DLL"
"Dictionary"="S:\\MSAPPS.97\\Proof\\MSSP2_EN.LEX"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\1037\Normal\Clients]
@="S:\\MSAPPS.97\\Proof\\HSPELL32.DLL"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\2057]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\2057\Normal]
"Engine"="S:\\MSAPPS.97\\Proof\\Mssp232.dll"
"Dictionary"="S:\\MSAPPS.97\\Proof\\MSSP2_EN.LEX"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\2057\Normal\Clients]
"C:\\Program Files\\Common Files\\Microsoft Shared\\PROOF\\Mssp232.dll"=""
"S:\\MSAPPS.97\\Proof\\Mssp232.dll"=""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\3081]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\3081\Normal]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\3081\Normal\Clients]
"C:\\Program Files\\Common Files\\Microsoft Shared\\PROOF\\Mssp232.dll"=""
"S:\\MSAPPS.97\\Proof\\Mssp232.dll"=""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\Vendor]
"Inso"="S:\\MSAPPS.97\\Proof\\Mssp232.dll"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Proofing
Tools\Spelling\Vendor\Clients]
"C:\\Program Files\\Microsoft Office\\Office\\MSACCESS.EXE"=""
"C:\\Program Files\\Microsoft Office\\Office\\EXCEL.EXE"=""
"C:\\Program Files\\Microsoft Office\\Office\\WINWORD.EXE"=""
"C:\\Program Files\\Microsoft Office\\Office\\POWERPNT.EXE"=""
"C:\\Program Files\\Microsoft Office\\Office\\OUTLOOK.EXE"=""
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The S in the "S:\\MSAPPS.97\\Proof" path, is the network mapped drive.