Hi Scott, I hope this helps
I would try one of these programs first:
Spyware Programs links:-
www.lavasoftusa.com Ad-Aware
www.security.kolla.de Spybot
Make sure you update them. If that fails have a look in the registry.
To remove entries manually go to:
Start>Run>Regedit and navigate to this key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Toolbar
Clear Entries from Tools:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Extensions
Select each subkey and look at its MenuText value in the right-hand pane.
When you locate the menu item, delete the entire subkey.
Note you can save the registry key first by:
On the File menu, click Export.
In the File name box, type SaveKey, and then click Save.
Or create a system restore point prior to editing.
Note: If the registry key is not there, you can simply create one by going
edit > new.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;322756
HOW TO: Back Up, Edit, and Restore the Registry in Windows XP
Disclaimer: Modifying the registry can cause serious problems that may
require you to reinstall your operating system. Use the information provided
at your own risk.