Honestly i can not really recommend bothering with this for several reasons.
First of all, you are running XP on this laptop? Win 7 at best?` On win 7 probably you would get a eCPU to work. On XP, i doubt it is possible.
Second, dropping around 100$ on a eGPU on this laptop is a waste of money. If you are in US, better put that 100 bucks towards a new laptop. For 300 you could get something like
this which would run those game with no problem and then some.