Wondering if it is safe to open that e-mail attatchment? This list that I came across shows the extentions for files that must be openned with caution by following these guidelines:
#1. Do not open it if you weren't expecting the specific attatchment, even if the sender is someone that you know.
#2. Delete it if from someone named GGggjjaygsyqqqtr or any sender that you don't know.(The 'GGggjj...' name is a type of randomly generated e-mail address and is probably spam)
#3. Only after you have taken steps, like a phonecall or e-mail communication, to verify the origin of the mail containing the attatchment should you consider openning it - AND EVEN THEN YOU SHOULD SAVE IT TO YOUR HARD DRIVE AND SCAN IT FIRST!.

File
Extension Description
--------- --------------------------------------------
ADE Microsoft Access project extension
ADP Microsoft Access project
ASX Windows Media Audio / Video
BAS Microsoft Visual Basic class module
BAT Batch file
CHM Compiled HTML Help file
CMD Microsoft Windows NT Command script
COM Microsoft MS-DOS program
CPL Control Panel extension
CRT Security certificate
EXE Program
HLP Help file
HTA HTML program
INF Setup Information
INS Internet Naming Service
ISP Internet Communication settings
JS JScript File
JSE JScript Encoded Script file
LNK Shortcut
MDA Microsoft Access add-in program
MDB Microsoft Access program
MDE Microsoft Access MDE database
MDT Microsoft Access workgroup information
MDW Microsoft Access workgroup information
MDZ Microsoft Access wizard program
MSC Microsoft Common Console document
MSI Microsoft Windows Installer package
MSP Microsoft Windows Installer patch
MST Microsoft Windows Installer transform, Microsoft Visual Test
source file
OPS Office XP settings
PCD Photo CD Image, Microsoft Visual compiled script
PIF Shortcut to MS-DOS program
PRF Microsoft Outlook profile settings
REG Registration entries
SCF Windows Explorer command
SCR Screen saver
SCT Windows Script Component
SHB Shell Scrap object
SHS Shell Scrap object
URL Internet shortcut
VB VBScript file
VBE VBScript Encoded script file
VBS VBScript file
WSC Windows Script Component
WSF Windows Script file
WSH Windows Scripting Host Settings file


A lot of the viruses we get in attachments have no file extension or the
extension .in

This is just a quick post but if there is anything more that you would like explained, PM me or point it out in your replies!

__________________
What I am is what I am, are you what you are, or what.
Eddie Brickel