That doesn't make sense. The shortcut is not the document; it's just a link to it. Mail recipients would need the actual file to amend it. In other words, they must have the actual document open to amend it and they don't have it if all they've received is a shortcut. Furthermore, if you have, indeed, attached a shortcut, mail recipients would not be able to open the file because they don't have it on their hard drive.
If you're talking about an internal network and you're emailing a shortcut to a file on a server to which everyone is connected, that's a different matter. But, you said nothing about to that effect.
I also don't believe Outlook 2000 shows "shortcut" on it's menu of choices for Inserting an attachment. Here's what Outlook 2003 shows:
If Outlook 2000 shows "shortcut" on it's menu of choices for Inserting an attachment, please attach a screen print as proof.