Hi,
Read this, download hotfix and this problem should be solved.
http://support.microsoft.com/kb/921113

Also, if you run & update Windows it shouldbe solved.

It is necessary to remove used tools:
Please download DelFix by “Xplode” to your Desktop.

Run the tool and check the following boxes below;

[] Remove disinfection tools
[
] Create registry backup
[*] Purge System Restore

Now click on “Run” button. Wait for the programme completes his work.
All the tools we used should be gone.
Tool will create and open an log report (DelFix.txt)
Note: The report will also be stored on C:\DelFix.txt

I don’t need DelFix log report.

----- next -----

Free Online Computer Scan - Online Software Inspector (OSI) - Secunia
http://secunia.com/vulnerability_scanning/online/

[*] Click ‘Start Scanner
[*] Wait for Status/Currently Processing: at the lower left to say ‘Java Applet loaded successfully. (allow java to run) Press “Start” to begin.’
[*] Click ‘Start’.
[*] The scan should take less than a minute or so.
[*] When done, download and install all the recommended updates.

----- and -----

I recommended you to keep MCShield if you will and to use free Malwarebytes AntiMalware.
You may download MCShield from one of the following links:

MyCity - Official download link
Softpedija - Mirror download link

It will prevent infection by computer via USB flash drive, mobile phone or any other memory card.
And not only will prevent infection, but it will immediately clean flash drive, memory card or external HDD.

You may download Malwarebytes from here:
http://www.malwarebytes.org/
( click on Free Download button )

It comes as an individual & addition scanner to your antivirus protection. There will be no conflict between them