After doing a little research on the above, it seems that they are PC virus's which could be part of a Trojan Horse.
They will NOT affect your Mac but you do not want to be sending them along to those less fortunate people who have to worry about this sort of thing. Just delete them, you did that already, and sit back and smile about the good choice you made when you got a system that was not prone to successful virus attacks.
Good Anti-Virus software will check your Mac for the existence of stuff that you might pass along.
hope this helps
Recently scanned my HD and Virex found 3 or 4 files with bite-exploite virus... I deleted it immediately, but then thought that I should have written the names and check what it was.
Anyhow, may be someone knows - what are thouse bite-exploite viruses? are they mac's viruses or Windows viruses? i read somewhere that virex and NAV also trace PC viruses.