The simples solution, change vista to w7

cuz vista lack of alot usefull things

The other way: (sorry for names of components but i dont use english version)
Center of network and shearing >
Shearing and discovering:
Remamber to check if: Discover network is On
and Shearing printer is on too
I got 1 pc with vista and after reboot it reset those settings badly ;/ thats why i need to change it to w7
Hope i helped