If someone could please advise
when scanning for rootkits how do I find out if the hidden files I find are Legitimate
I did a rootkit scan and came up with 
C:\WINDOWS\SYSTEM32\kdtvd.exe Hiddenfile
C:\WINDOWS\SYSTEM32\kdtvd.exe.bd.ren Hiddenfile
C:\WINDOWS\Prefetch\KDTVD.EXE-07FD52E1.pf Hiddenfile
I tried gooleing but no match 
is there some way to check to see if they are not malware?
I certainly don't want screw things up nor do I want to be hijacked.
please Help
JC