You can use OH from
http://www.microsoft.com/downloads/...69-57ff-4ae7-96ee-b18c4790cffd&displaylang=en
Type
oh +otl
reboot
then
oh /t file <filename>
or leave filename blank to see all.
EG to see what program has inbox.dbx open (OE's inbox file)
oh /t file inbox.dbx
which returns
//
// TIME: 2004-03-30 19:50
// MACHINE: SERENITY
// BUILD: 2600
// OH version: built by: dnsrv_dev(v-smgum)
//
//
00000CF0 msimn.exe File 050c \Documents and Settings\David Candy\
Local Settings\Application Data\Identities\{E6E1A8F2-C885-46A5-975E-94A4A1F8C788
}\Microsoft\Outlook Express\Inbox.dbx
[Microsoft Internet Mail And News (MSIMN.EXE) is the real name of Outlook Express rather than the marketing name. Office's Outlook internet features is a copy of Outlook Express. OL stole OE's code while OE got OL's name.]