need help understand how to update ( virus definitions) for this

please check this source and kindly tell me how do i update the virus definitions in which format and how.


this file name in appath Signature.ATVGuard

how do i add it

name of virus

crc32 ??

were do i get those information from please guys

source code
http://www.planet-source-code.com/vb...73558&lngWId=1