Your profile give nothing away; but with the content of your post, that is understandable.

As you have come here, you have no other IT literate people around that you wish to share with ?

Firstly: I would save ALL the offending mails.

As a quick check, right click on the Emails title, this should open a box in which you should see a tab for details, click on this, from here there is a button marked 'message source' this contains IP addresses that you can use, with a little help, to backtrack the sender.

[edit] started typing when only ONE answer, posted, and ended up on page TWO. At least Negative is saying what I was trying to get across.

Also, forgot to add DON'T REPLY TO THESE MAILS, [/edit]