Hi... I keep getting some attachments that cme as .dat files, and I can't get them to open. I have been able to open one that has been created using excel but when I do open it I get all kinds of crap such as squares,dollar signs,<> signs, etc so that the spreed sheet is unreadable. Am I doing something wrong?? Could the sender be saving these files incorrectly for sending via email???? Am I just stuck on some basic elementary concept that noone has bothered to explain to me???

HELP!!!!