so it could be someone I know, but they dont know they're doing it......

some of it doesn't make much sense to me, but at least there's a chance it's not malicious.
It's very likely that they are unaware. Anyone can change the source address that an email is sent from. I personally have my own domain name but the mail server I use is hosted by a different ISP. When people send me emails to [email protected] (as a destination) or I send out email from [email protected] (as a source) they are hiding the true source/destination. This is a very legal and legitimate technique. However, virus writers have been using this as a form of "social engineering" to convince users to "double-click" because they think it's a legitimate email. There have been some interesting results to this:

- I received a panicked email from a relative asking if she should apply the patch that "[email protected]" sent her. I reminded her that while MS might be concerned about users and their security, they are not THAT concerned enough to send out those kinds of emails. I also reminded her that .exes are for Windows machines and that her Macintosh probably would object to even trying to run the patch.

- a recent email I received had me chuckling. It was an "update" for a Symantec Virus package. Underneath it said it had been virus scanned and declared clean by McAfee.

Just be a bit paranoid and you're odds will improve against getting infected.

You might want to check other legimate emails to see if any have an IP that match. If they do you may have found the infected person(s) and could notify them of this.