To me, the best idea for people tied through software to MS products is to use
Ubuntu to do their email and surfing chores and then Winblows for the tasks they
have to use it for .... offline! That way you get the protection and safety of
linux where necessary and then can use MS stuff safely too.
I successfully converted my business computer to Ubuntu about 8 months ago with
the exception of Quickbooks. Though there are plenty of linux alternatives
available it would have required countless hours of inputting our old data so
instead I opted to just keep an old XP machine that lives offline and I use it
as necessary to enter financial stuff which works fine
