theres also a p word which isnt as good. depends if your into that stuff thoughive had win xp running on worse than that as well ,but if he added some more ram he could run it more stable , or look around , you can pick up a cheap 2nd user system for about £30 or less that can run xp very well
and if you know the T word then you can get software for free
id seriously upgrade os and hardware if possible. cheaply done