Hi Lisa,
I think your machine may be compromised and infected by Viral infection.
Try these cleaning steps below and the hijackthis log:
1... Click start >> Control Panel >> Double Click Network and Internet
Connections >> Double click Internet Options, on the IE Properties window
you will see these Options:
General | Security | Privacy | Content | Connections | Programs
| Advanced .
Click on General Tab (1st Tab on the left) and you will see a Button called
[ Clear History ..] click on it to clear your History caches, then click on
[Delete Files..] to delete Internet Files created over the time, click on [
Delete Cookies...] to delete your cookies left by visiting websites.
= Then try to Disable the Add-Ons on your Browser somehow installed on your
browser, On how to disable the Add-ons follow this:
Click on Programs Tab and then click the Manage Add-Ons Button there Disable
the None/Not Verified Plug-ins/Add-ons ( you need to Renable them one-by-one
later and see which is the culprit or you can send them here in your next
post) and click [OK] to confirm your Changes.
How to manage Add-Ons: http://support.microsoft.com/kb/883256
Click on Advanced Tab and scroll down under the browsing option and uncheck
this box:
[&] Browsing
[ ] Enable Third-Party browser extensions (Req Rest) and click Apply
then OK to close your IE Properties.
Scan for malware from here:
SuperAntispyware - Free http://www.superantispyware.com/superantispywarefreevspro.html
Locate this key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run = look in
the right pane/window and remove the entry for these apps.
And here also:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
\Run
download Hijackthis and send me the log.
(http://www.trendsecure.com/portal/en-US/threat_analytics/hijackthis.php)
Send me copy to my address is : to_you_ross(at remove this and repalce with
the obvious)yahoo.co.uk.
( _ is underscore)
HTH
nass