Very wise to hold off, Tia. A good source for looking up File Extensions is http://filext.com/ If your files came from a MacIntosh user, they may be valid, but here's what the above site says:- Re: BHX This file type is not often seen on PC systems. Note: The virus W32/MyWife.d@MM!M24 discovered 1/17/06 uses this file extension to send itself to others. Be careful if you have received a file of this type in the mail. Re HQX Macintosh BinHex 4 Compressed Archive George. ________________________________ From: guispeak@xxxxxxxxxxxxx [mailto:guispeak@xxxxxxxxxxxxx] On Behalf Of Khalid Sent: 17 April 2006 04:29 To: guispeak@xxxxxxxxxxxxx Subject: [guispeak] noing files extension Hi All, I've received two attachments in one of the yahoo mailing list I'm moderating. the attachments are: Attachments001.BHX Attachments00.HQX I think these files are viruses, so I'd like to know where I can get details about such type of files. Is there a certain website where I can obtain info about file extensions like .HQX and .BHX. Any suggestions is appreciated Tia