Information about the original VBS/LoveLetter.A is available at:
http://www.F-Secure.com/v-descs/love.shtml
VBS/LoveLetter.N variant spreads in a message with the following
content:
Subject: LOOK!
Body: hehe...check this out.
Attachment: LOOK.vbs
This variant deletes all files with the extension ".xls" or ".mdb". It
also hides all files with the extension ".lnk" or ".exe". After the
original file has been deleted or hidden, the worm creates a copy of
itself using the original filename and an additional extension ".vbs".
[Analysis: Katrin Tocheva, Mikko Hypponen, Alexey Podrezov and Sami Rautiainen, F-Secure]