I hate to be a wet blanket, but ".5 btc bode rdeem@mtgox.com" looks like a description (of the key file?) ending in an email address, which, obviously will end in .com ... many Windows computers may confuse this to be an old "MS DOS" COM executable file..
if you forward the message/file to me I will take a look.. I'm on a Mac so I'm not worried about your silly virii & trojans.. (although i will still be careful    )