Hi guys, thought i'd just post all my info here regarding a nasty Spyware infection that seems to have exploded everywhere over the last couple of days... Just hope it helps someone else as it gave me quite a late night! 
Machine boots as normal, logon screen and then no taskbar/desktop icons with the desktop background changed to blue and a message (wallpaper) that reads "Warning! Spyware detected on your computer! Install an antivirus or spyware remover to clean your computer!" you can run taskmanager but most things don't work.
Machine had AVG Network edition and was upto date.
Hijackthis reports several entries related to 'Antivirus XP 2008' but removal doesn't help.
Ran 'Malwarebytes Anti-Malware' - although it finds things the machine falls over with a STOP error about 50% through the scan - 3 different errors @ different points.
Rebooted to safe mode and ran 'SDFix', reported it needed a reboot to complete - did so (now in normal mode) no more desktop background & colour but still no taskbar/icons.
Ran 'Malwarebytes Anti-Malware' and it found 18 (Adware.Hotbar, Rogue.Multiple, Adware.Zango, Malware.Trace) infections and completed. Rebooted.
Now i'm still at the blank desktop stage with no taskbar/icons and thinking my next step is a repair install. Unless someone else has a better idea anyway!

Machine boots as normal, logon screen and then no taskbar/desktop icons with the desktop background changed to blue and a message (wallpaper) that reads "Warning! Spyware detected on your computer! Install an antivirus or spyware remover to clean your computer!" you can run taskmanager but most things don't work.
Machine had AVG Network edition and was upto date.
Hijackthis reports several entries related to 'Antivirus XP 2008' but removal doesn't help.
Ran 'Malwarebytes Anti-Malware' - although it finds things the machine falls over with a STOP error about 50% through the scan - 3 different errors @ different points.
Rebooted to safe mode and ran 'SDFix', reported it needed a reboot to complete - did so (now in normal mode) no more desktop background & colour but still no taskbar/icons.
Ran 'Malwarebytes Anti-Malware' and it found 18 (Adware.Hotbar, Rogue.Multiple, Adware.Zango, Malware.Trace) infections and completed. Rebooted.
Now i'm still at the blank desktop stage with no taskbar/icons and thinking my next step is a repair install. Unless someone else has a better idea anyway!
