The "unsafe" file list is used to prevent you from accidentally opening a file that could cause problems on your computer.

The list is hard coded in the Shdocvw.dll file.

IE6 has added the following file types to the list, making it consistent with Microsoft Office:

<b>.ad</b>  Microsoft Access project extension
<b>.adp</b> Access project
<b>.crt</b> Security certificate
<b>.ins</b> Internet Naming service
<b>.mdb</b> Access program
<b>.mde</b> Access MDE database
<b>.msc</b> Microsoft Common Console document
<b>.msp</b> Microsoft Windows Installer patch
<b>.sct</b> Windows script component
<b>.shb</b> Shell scrap object
<b>.vb</b>  VBScript file
<b>.wsc</b> Windows script component
<b>.wsf</b> Windows script file
<b>.cpl</b> Control Panel extension
<b>.shs</b> Shell scrap object
<b>.vsd</b> Microsoft Visio file type
<b>.vst</b> Visio file type
<b>.vss</b> Visio file type
<b>.vsw</b> Visio file type
The complete list includes the above file types and the following:
<b>.asp
.bas
.bat
.chm
.cmd
.com
.exe
.hlp
.hta
.inf
.isp
.js
.jse
.lnk
.msi
.mst
.pcd
.pif
.reg
.scr
.url
.vbe
.vbs
.ws
.wsh</b>
To add additional file types to the list:

1. Use Regedt32 to navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer.

2. If the UnSafeFiles sub-key is NOT present, use the Edit menu to Add Key name UnSafeFiles.

3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnSafeFiles.

4. If the Include sub-key is NOT present, use the Edit menu to Add Key name Include.

5. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnSafeFiles\Include.

6. For each file type that you wish to add, use the Edit menu to Add Key name <Tile Type>. Example: To add the .xyz file type, add a sub-key named .xyz.

NOTE: To exclude a built in file type, like .exe, create the .exe sub-key in the following path:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\UnSafeFiles\Exclude.