Does this make sense?

I bought 2 10 MBPS NIC's off this guy on Ebay and when I email him back to say Thank you for sending them (I already sent the money) he replys 3 hours later with an attempt at sending me a virus.  Nothing in the email but two attached file a .dat file or "data" file and a .doc.scr file which means this "VIRUS do not open because no one in there right mind make a double extention file, it just dumb!!!".  Does this make sense to anyone?  Possibly he got this "virus" and its a automatic send along meaning it takes everyone in the address book and sends it to them but i cant see hat hapening.  Any suggestions from Netsmog/Hardware Pub is appriciated.  Oh and members reply too (Im not partial)