Just fixed widgi.toolbar problem in my Vista system and would like to share the experience. First detected by Spybot and identified as AdwareC. It multiplied to 18, then 23, then 24 entities in 2 days. Greatly slowed down my system. Could not be fixed by Spybot because it needs admin mode. Not even detected by Spyhunter!
So I used the following reference and proceed:
http://en.kioskea.net/faq/300-access-a-hidden-administrator-account-in-windows-vista
1. START, ACCESSORIES, right click COMMAND COM and choose RUN AS ADMINISTRATOR
2. Enter: net user administrator /active:yes
3. Switch to admin account
4. Run Spybot, fix selected problems, reboot
5. Allow Spybot to rerun on reboot, fix selected problems again.
6. Switch to usual user account
7. Disable admin acct as in Steps 1, then enter command:
net user administrator /active:no
Now my system is back to normal.
Afterwards I realize that Spybot can be run in admin mode. Right click on Spybot icon and choose RUN AS ADMIN, and I expect the result to be the same, but much easier. So I would suggest trying this latter route first.
Good luck.