Search and replace or wildcard?

[dl907687]

I need to delete a registry setting for outlook whenever a user logs on through a login script that runs a silent reg file. Unfortunately one of the keys in the key name is unique to the user (see below, the key in this instance is "Exchange Profile dl907687", where dl907687 is unique to the user as it is their login ID, i.e. another PC could have a key "Exchange Profile dl929687".)
Is there a wild card command I can use within a reg file or is there a search and replace tool that can be run from a login script?

[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Exchange Profile dl907687\13dbb0c8aa05101a9bb000aa002fc45a]
"001e6610"=""