Hello Richard, and welcome to Justanswer.com.
Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.
Ok, lets try this together. Go to this specific page
Switch your OS to 10.6. download the specific 02/20/15 97.2 MB epson16360.dmg file ..
Once downloaded, attempt to open your downloads folder and then doubleclick the epson16360.dmg file.
Will it let you install it now?
Take your time.
And make sure when you try to open and run the file, its called exactly epson16360.dmg
The one you downloaded earlier.
Whats the exact file name?
It may be best if I connect to your mac from here.. To see whats going on. Those DMG files are the correct installer files.
You received an email saying there are two " Bots" on viruses on your computer?
Be careful that your not falling victim to a phishing scam. What exactly did the email say?
And what was the exact email address it came from? ( youre welcome to copy and paste the text into the reply box here, if you want)
Ok, I checked that link and its safe. Genuine comcast website.
If you want to download norton for mac, or whatever else it is they were offering.. Thats up to you~