For those of you who are having your attachments deleted or "blocked" by Outlook, taking the following steps should solve the problem.  It is really spelled out – step by step – but it will be much easier if you print it out...  This is a re-print from Microsoft's and Iomega's "Knowledgebase," respectively (http://support.microsoft.com/default.aspx?scid=kb;en-us;290497&Product=ol2002).

If you have Outlook, keep reading.  If you have "Outlook Express," click here.

If you want to skip all this, you can pick up your email attachments at:
    www.mail2web.com You will be asked only for your email address, and your password.

However, you must do this before checking your mail through Outlook.

Better to do the following, which will fix the problem once and for all...

Exit every program that you might be in, until you are at your desktop (or what your computer looks like when it first powers up).

1. Click Start, and then click Run.
2. In the Run dialog box, type regedit, and then click OK.  You will be in the "Registry Editor."
    
3. Before doing anything, hit the left arrow on your keyboard until the only item left in the left panel is "My Computer."
   
   We are going to look for something called HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Outlook\Security
   
   Here is how:
4. Hit the right arrow.  Hit the down arrow until HKEY_CURRENT_USER is highlighted.
5. Hit the right arrow.  Hit the down arrow (or the letter S) until Software is highlighted.
6. Hit the right arrow.  Hit the down arrow (or the letter M) until Microsoft is highlighted.
7. Hit the right arrow.  Hit the down arrow (or the letter O) until Office is highlighted.
       (If it doesn't exist, highlight Microsoft again, the click Edit, New, Key in the Menu Bar above, type in Office and hit Enter.)
    
8. Hit the right arrow.  Hit the down arrow (or the number 1) until 10.0 is highlighted.
       (If it doesn't exist, highlight Office again, the click Edit, New, Key in the Menu Bar above, type in 10.0 and hit Enter.)
    
9. Hit the right arrow.  Hit the down arrow (or the letter O) until Outlook is highlighted.
       (If it doesn't exist, highlight 10.0 again, the click Edit, New, Key in the Menu Bar above, type in Outlook and hit Enter.)
    
10. Hit the right arrow.  Hit the down arrow (or the letter S) until Security is highlighted.
        (If it doesn't exist, highlight Outlook again, the click Edit, New, Key in the Menu Bar above, type in Security and hit Enter.)
     
11. With Security highlighted, click the Edit, New, and String Value in the Menu Bar above.
     

12. Should you see a value in the right pane that says Level1Remove, jump to Step 14.  Otherwise:
    
    Type (or copy and paste) the following name for the new value:
        Level1Remove

13. Press ENTER.
14. Right-click Level1Remove in the right panel, and then click Modify.
     
15. Copy and paste (or type) the following into the text box:
        .exe;.bat;.zip;.hlp;.lnk;.mdb
    
    If you typed it, don't forget the periods and semi-colons (no shift)
    If you are really having problems typing – or copying and pasting – the really important one is .exe -- You can just do that one...
     
16. Click OK.
17. Exit the Registry Editor.
18. Restart your computer.

Finished (for Outlook) !!

If you have Outlook Express:

1. Open it
2. In the menu bar above, go into Tools, Options.
3. Click the "Security Tab"
4. Un-check the Check Box that says: "Do not allow attachments to be saved or opened that could potentially be a virus check box" in the "Virus Protection" section.

5. Click OK

Finished (for Outlook) !!

    You can also examine: http://www.microsoft.com/windows/ie/downloads/critical/330994/default.mspx