not a valid win32 ap

From: Sheri (lavigirl_at_excite.com)
Date: 11/12/03 

Date: Wed, 12 Nov 2003 14:04:18 -0800

Everything that I try to open on my WinXP Home laptop
says cannot open whatever is not a valid win32
application. I have 4 different anti-virus programs
including Norton, Bulldog, RAV, and AVG. They have said
all different kinds of things. I have aparently had
around 9 different viruses in about a month. I do not
have any clue about how to reverse this. I was going to
try to make another user, but I can't open user
accounts. I can open these files by right clicking and
going to Run as.. then it asks which user accounts do
you want to use to run this program? Select current user
and unselect protect my computer and data from
unathorized program activity. Please help. I have to
admit that I don't know how to get to my admin user.
Thank you for any time,

Sheri