TESTED "x64" security software..

Ginter: NOD32 AV x64 runs as a true x64 app.

Look for me next time your online and I can show you how to download it.

I can tell you this, Live OneCare 2.0 is a 32bit program, that runs on 64bit Vista.

It works for me, and I personally don't see a need to get anything else.

In short...No. If the version you d'load is for a 64bit system, the kernel mode will probably still run as a 32bit process, and it will Not affect your security in any way.
A 64 bit system runs identically to a 32bit system in many ways, that's why many 32bit programs run just fine on a 64bit system. The way some programs access/register/process/stream..etc, data is the only difference for a 64bit program, so things like CODECS need to be bit specific in that manner. Other than that, the only real difference for 64bit is the amount of data it can address in a single clock, since it has double the data width capacity (which is exponential of course)

i am trying out Avast 4.8 av

not sure of home or professional


but i would really like to know how can i tell if it is


running x64 bit where do i look?

i maybe thinking of buying it and if so

should i get home or professional

Look under C:\ Program files.....
If you find it in Program Files(x86) then it is running in 32 bit mode, but if you find it in C:\Program files it is a 64 bit mode.
Mine runs in 64 bit for couple of months

Regards
acdcfan

man i really confused someone told me the opposite

How is that confusing? If you find your AV got installed to /ProgramFiles(x86)/ its oviously a 32bit Antivirus but if its installed to the regular /ProgramFiles/ its a 64bit AV.

This is different if your using Vista 32bit.

ProgramFiles(x86)\ i was told this was for 64-bit

ProgramFiles\ i was told was for 32-bit

that is what was confunsing
or i mis understood
with is possible

Your very close njnitehawk, The folder changes depending if your using 32bit or 64bit...

On Vista 32bit there is only one /ProgramFiles/ Folder for all the 32bit software but on Vista 64bit it comes with two folders...One called /ProgramFiles(x86)/ for all the 32bit programs and the other /ProgramFiles/ for 64bit programs...

I hope I explained this well enough for you
dmex

It is funny how install directory points to 64 bit but 4 process running (looking in task manager) are all xxxxxxx*32 (where xxxxx is name of service)