For checking latest definition files i using this code

code:
 
$virusfile="\\server\share$\virusfile.txt"
   	$details=@userid+", "+@date+", " +@ipaddress1+",dat files are old"
	$datver=ReadValue("HKEY_LOCAL_MACHINE\SOFTWARE\Network Associates\TVD\VirusScan Enterprise\CurrentVersion","szVirDefVer")
	$read=Right ($datver,4)
	If Exist("c:\update.ini")=1
		Del "c:\update.ini"
	EndIf 
	Copy "\\server\updates$\update.ini" "c:\"
	$srvdat=ReadProfileString("c:\update.ini","SuperDat-IA32","DATVersion")
	If ($read<>$srvdat)
		$WRITE=(WriteProfileString($virusfile,"Dats_Old",@wksta,$details))
    		Shell "\\server\share$\virus.bat"
	EndIf
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“I’ll not change you unless you don’t have intention to change yourself” --H:Quran