Systemworks can not remove a registry entry for flash 6 & I can't delete it manually. Can you help

Windoctor reports, in the "Invalid ActiveX/Com entries" section that "CLSID\1171A62F-05D2-11D1-83FC-00A0C9089C5A}\inprocserver32" refers to a missing file "F:\windows\system32\macromed\flash\flash6.ocx". Windoctor failed to remove it and the manual option is to delete it from the registry. Deletion also fails. Can anyone help me to get rid of it?

Bob