You would have to temporarily diable VirusScan and then submit these files for analysis. Should they still tell you that they are an infection reply to the email keeping the headers intact disputing it.
Double-click the taskbar icon to open Security Center
Click Advanced Menu (bottom left)
Click Configure (left)
Click Computer & Files (top left)
You can disable VirusScan in the right-hand module and tell it for how long.
Then click the Restore button (left & assuming it was quarantined) & restore the item.
Send the file to Avert for analysis:
http://vil.nai.com/vil/submit-sample.aspx or
https://www.webimmune.net/default.aspor
Email file to: [EMAIL="virus_research@avertlabs.com"]virus_research@avertlabs.com
When submitting samples via E-mail all samples must be packaged in a .ZIP file. When creating this .ZIP file, it is important to understand that the .ZIP can be no more than 3 megabytes in size and can contain no more than 30 files.
Additionally, any .ZIP file created must be password-protected using the password "infected" (minus the ""). Failure to follow these guidelines will cause your submission to be rejected.