Perhaps the file asociation for .scf files is broken.

To check/repair it run regedit then look in HKEY_CLASSES_ROOT\.scf -- it should look like the following:



If that looks okay then copy/pasting the following into a .reg file and double-clicking might change your computer's behaviour in this instance (this is a guess... it might bugger it up totally). Make a System Restore Point beforehand::
Code:

---

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\SHCmdFile]
"NeverShowExt"=""
@="Windows Explorer Command"
"InfoTip"="prop:DocComments"

[HKEY_CLASSES_ROOT\SHCmdFile\CLSID]
@="{57651662-CE3E-11D0-8D77-00C04FC99D61}"

[HKEY_CLASSES_ROOT\SHCmdFile\shell]

[HKEY_CLASSES_ROOT\SHCmdFile\shell\open]

[HKEY_CLASSES_ROOT\SHCmdFile\shell\open\command]
@="explorer.exe"

[HKEY_CLASSES_ROOT\SHCmdFile\shell\open\ddeexec]
@="[ShellFile(\"%1\",\"%1\",%S)]"
"NoActivateHandler"=""

[HKEY_CLASSES_ROOT\SHCmdFile\shell\open\ddeexec\Application]
@="Folders"

[HKEY_CLASSES_ROOT\SHCmdFile\shell\open\ddeexec\Topic]
@="AppProperties"

[HKEY_CLASSES_ROOT\SHCmdFile\shellex]

[HKEY_CLASSES_ROOT\SHCmdFile\shellex\DropHandler]
@="{86C86720-42A0-1069-A2E8-08002B30309D}"

[HKEY_CLASSES_ROOT\SHCmdFile\shellex\IconHandler]
@="{57651662-CE3E-11D0-8D77-00C04FC99D61}"

---