I just got a new laptop running Vista so I wanted to backup and transfer all my Outlook signatures from my old XP laptop. Both are running Outlook 2007.

Outlook 2007 Signature file locations in Windows Vista and XP:

Vista:
%USERPROFILE%\AppData\Roaming\Microsoft\Signatures
(usually C:\Users\\AppData\Roaming\Microsoft\Signatures)

XP:
%USERPROFILE%\Application Data\Microsoft\Signatures
(C:\Documents and Settings\\Application Data\Microsoft\Signatures)

From that directory, just copy everything to your new computer.

I also wanted to transfer my POP3 account settings, but as of Outlook 2007 you can no longer do that 🙁 Don’t ask me why Microsoft decided to remove this feature. There seems to be various workarounds and 3rd party tools but I chose to just enter my 10 POP3 accounts all over again.