The '1105' patch for Microsoft Money no longer appears to be available. If you've not yet done your reinstallation CD (as described in this article) and have the patched version on your PC, then you're now risking the loss of your data, so once again, I advise to make the CD and test it (on another machine!).
If you don't want to go through the above, you have another option - export your files to QIF and then import them into the sunset edition. However, you'll also have to do this before you have to reinstall (if forced because of a new machine, crash etc). If you've got a simple file (e.g. one currency or not many accounts, this is a reasonable option). There is additional work here, but as the sunset edition is a downloadable free program, you can always reinstall if needed.
Glyn