It looks like a pattern file for your antivirus program.
http://www.gatelockglobal.com/html/support/faq_virus.shtml
How do I determine HouseCall's scan engine and pattern file version?
To identify the scan engine and pattern file version that HouseCall is
using to scan your PC:
a.. Open Windows Explorer and locate the vsapi32.dll file in the
\winnt or \windows directory.
b.. Right-click vsapi32.dll and select Properties.
c.. Click the Version tab to view the current Scan Engine version.
d.. Locate the pattern file, which is also located in the \winnt or
\windows directory.
e.. The pattern file is listed in the format Vptnfile.xxx, where
"xxx" is the current pattern file version or number.
--
Daniel Chang
Server Setup Team
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http://support.microsoft.com/directory
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See the Windows NT Homepage at
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: looking at that root level of C: on a Windows 2000
: server, this file, vptnfile.675 shows up. Can anyone tell
: me what this file is and if it is wise to remove it.