Wow. That's really old-fashioned.
Our corporate network's generic protection will stop this. Back when "ILoveYou" came out, we simply configured Windows to open .SCR files (and several other extensions) with Notepad. 10 years later, we still have no anti-virus software on the PCs, and no data lost to viruses during that time (or the 10 preceding years either).
Age 55, retired July 1, 2012; DW is 59 and working for 4 more years. Current portfolio is 1950K split 50 stocks/20 bonds/30 cash. Renting house, no debts.