I don't remember what an .aw does, but a .chm file is a help file.
If you are not looking in Application Data then you are not changing the correct
file.
To rename the catalog, follow these steps:
1. Click Start, point to Search, and then click For Files or Folders.
2. In the Search for files or folders named box, type mstore10.mgc. Click Search
Now.
3. Right-click your Mstore10.mgc file, click Rename on the shortcut menu, and
change the three-letter file name extension from .mgc to .old.
NOTE: If your computer is used by more than one person or has more than one
profile, be careful to rename only the Mstore10.mgc file that is in a subfolder
of your personal user folder (the folder with your login ID). If you are on a
network, ask for help from your network administrator if you do not understand
how to find the correct file.
4. Run Clip Organizer.
Clip Organizer creates a new Mstore10.mgc file automatically.
After Clip Organizer creates the new catalog file, you must re-import any custom
clips that you previously imported, and retype any clip property information
that you manually created.