Clear and Manage Windows 7 Jump Lists
To find application associations, open the *.automaticdestinations-ms files in Notepad. You can find file paths to items in the application jump list and figure out which app/jump list the *.automaticdestinations-ms file is associated with.
Note that opening the files in Notepad, that there are (something like) spaces between characters. For example, foo.exe is "f o o . e x e"
Windows 7 Jump Lists are stored in the paths listed in the following short list of filenames that are associated with specific applications:
PATH: %AppData%\Microsoft\Windows\Recent\AutomaticDestinations
28c8b86deab549a1.automaticDestinations-ms
= IE8 Pinned and Recent
a7bd71699cd38d1c.automaticDestinations-ms
= Word 2010 Pinned and Recent
adecfb853d77462a.automaticDestinations-ms
= Word 2007 Pinned and Recent
a8c43ef36da523b1.automaticDestinations-ms
= Word 2003 Pinned and Recent
1b4dd67f29cb1962.automaticDestinations-ms
= Windows Explorer Pinned and Recent
918e0ecb43d17e23.automaticDestinations-ms
= Notepad Pinned and Recent
d7528034b5bd6f28.automaticDestinations-ms
= Windows Live Mail Pinned and Recent
c7a4093872176c74.automaticDestinations-ms
= Paint Shop Pro Pinned and Recent
b91050d8b077a4e8.automaticDestinations-ms
= Media Center
f5ac5390b9115fdb.automaticDestinations-ms
= PowerPoint 2007
23646679aaccfae0.automaticDestinations-ms
= Adobe Reader 9
aff2ffdd0862ff5c.automaticDestinations-ms
= Visual Studio 2012
PATH: %AppData%\Microsoft\Windows\Recent\CustomDestinations
28c8b86deab549a1.customDestinations-ms
= IE8 Frequent & Tasks
The post where I found this list was here.
(Most of that discussion is not very helpful. It was started in June 2009. I pulled this list out from Microsoft MVP, Ronnie Vernon's replies later in the thread – Scroll down to March 10, 2010.)