First seek confirmation of the false detection; upload the file(s) to www.virustotal.com . If confirmed:
Send the file(s) in a password protected zip to newvirus at kaspersky dot com. Subject: false positive. Include password in the e-mail.
Please also report the name of the detection in the e-mail.
You can exclude the files from the scanning under the advanced options of the antivirus/antipsyware section (Virus Management --> Exceptions)