Plusnet Protect - download failure (Mac user)

[#1]

Hi guys,
I've followed the download link but each time the file will only open as a text file.
What trick am I missing.  Feeling like I'm barebackin the internet at the moment.
SM

[#2]

It doesn't work on a MAC http://www.plus.net/support/security/spam/plusnet_protect.shtml#minspec as Mac computers don't get viruses - I keep being told

[#3]

Thanks for the quick comeback, Oldjim.
I'm totally new to Mac and had to finally given in to my brother who's a major Mac-vangelst.  What is with those gys??!!  They get a kind  of glassy eyed Stepford Wives look in their eyes when talking about the Mac culture!
And yes, he too says Macs don't get viruses??  I'd so like to believe, but then again ... I'm very SCARED!!

[#4]

Have a read here for the options http://www.wilderssecurity.com/showthread.php?t=295428

[#5]

Just to add on to what Oldjim has posted, Bullguard also offers an Anti Virus package for Mac users http://www.bullguard.com/
Hope this helps.