Maria, my brother couldn't remember his password here so here is what he said to do about your computer problem:
Try in this order:

1. Update your Windows with the latest patches available at
http://windowsupdate.microsoft.com

2. Download a free antivirus such as AVG, install, update, and run it.
http://free.grisoft.com/freeweb.php/doc/2/

3. Download the latest version of Spybot Search & Destroy, install,
update, and run it.
http://www.safer-networking.org/en/index.html
If it asks you to let it restart the computer in safe mode, then let it.

4. Download the latest version of Ad-aware SE, install, update, and run it.
http://www.download.com/3000-2144-10...age&tag=button

5. Download and run the latest version of CWShredder.
http://cwshredder.net/bin/CWShredder.exe

CWShredder is a removal tool to remove CoolWebSearch and its variants.
Some of the latest variants will close spyware removers such as
Spybot and Ad-Aware before they can run, so you might have to run
CWShredder first and then re-run Spybot and Ad-aware.

6. The last resort is to wipe the hard drive and re-install Windows
from the original system disks. If this is necessary, it's imperative
that you perform step 1 - 4 IMMEDIATELY after re-loading. A fresh
install of Windows from an older version is so vulnerable that you
will pick up trojans, worms, viruses, or other nasties within minutes
of re-connecting to the internet unless you are behind a hardware
firewall of some sort.

Hope this helps!