Over at MSFN Forums, user 'harkaz' has described a simple 3-step method of applying newer Microsoft updates to Windows XP operating systems.
He says: "The constraints are entirely artificial. Porting is easy as 1-2-3 ... So Windows XP can have semi-official support until 2019!"
(Score: 2) by isostatic on Sunday May 18 2014, @11:46PM
I have an XP machine (well two - one's a spare) which perform a fairly critical role. It uses 2 pieces of specific software (one inhouse, one external), but the replacement machine is $60k, plus training.
Realistically I don't see it being replaced until one of them dies.