Log on Problems

HELP!!!! No matter what I do, I can't log on to one of
my computers using Windows XP. I never had a password
for the past 4 years and now when I restart I am asked
for a password. I use to just hit "enter" with no
password and all worked fine. I have tried to logon
using "Safe Mode" but this still asks for a password even
for the administrator. I may have been attacked by a
virus, worm, parasite, or whatever. Is it possible for
someone to change or add a password while on the
internet? If so how do I fix it without loosing all of
my data on the C drive. Also I have received on my
second computer a message that I am missing file
c:\windows\system32\bridge.dll and 180Search Assistant.
Are these files required and could this file also been
removed by somone on the internet? HELP!!!

I have a very similar problem. Please let me know if you
find a solution

>-----Original Message-----
>HELP!!!! No matter what I do, I can't log on to one of
>my computers using Windows XP. I never had a password
>for the past 4 years and now when I restart I am asked
>for a password. I use to just hit "enter" with no
>password and all worked fine. I have tried to logon
>using "Safe Mode" but this still asks for a password
even
>for the administrator. I may have been attacked by a
>virus, worm, parasite, or whatever. Is it possible for
>someone to change or add a password while on the
>internet? If so how do I fix it without loosing all of
>my data on the C drive. Also I have received on my
>second computer a message that I am missing file
>c:\windows\system32\bridge.dll and 180Search Assistant.
>Are these files required and could this file also been
>removed by somone on the internet? HELP!!!
>.
>

Ditto! Please keep me in this thread.
>-----Original Message-----
>I have a very similar problem. Please let me know if you
>find a solution
>
>>-----Original Message-----
>>HELP!!!! No matter what I do, I can't log on to one of
>>my computers using Windows XP. I never had a password
>>for the past 4 years and now when I restart I am asked
>>for a password. I use to just hit "enter" with no
>>password and all worked fine. I have tried to logon
>>using "Safe Mode" but this still asks for a password
>even
>>for the administrator. I may have been attacked by a
>>virus, worm, parasite, or whatever. Is it possible for
>>someone to change or add a password while on the
>>internet? If so how do I fix it without loosing all of
>>my data on the C drive. Also I have received on my
>>second computer a message that I am missing file
>>c:\windows\system32\bridge.dll and 180Search Assistant.
>>Are these files required and could this file also been
>>removed by somone on the internet? HELP!!!
>>.
>>
>.
>