I have Nod32 2.7 on another 32 bit computer but have a new computer with Win7 Pro 64 bit OS. Initially I was going to just go with Eset Nod32 Ver.4 for 64 bit machines but after reading a number of AV posts on a number of sites including this one. I'm a bit confused as to which ESET product version to use because there appears to be some problems with versions other than 2.7, but of course this version isn't a 64 bit version from what I've read. I sent an email to ESET sales in Australia 1 February 2010 with a couple of questions.....absolutely no response. I posted a concern about the Australian office in this forum and Agoretsky responded with; "My best guess is that the folks in ESET's Australian office must be very busy. If you do not receive a reply to your voice mail or email in a reasonable amount of time then perhaps a local ESET reseller can assist you." Problem is there seems to be no other ESET reseller/s in Australia, so Aussies are stuck with the non responsive office here in Australia. I have come across a few other complaints about ESET not responding to emails so my experience is not an isolated incident. So....can someone here give me some advice on the Version to use with a Win7 Pro 64 bit machine. Thanks for reading, any help appreciated.