Hi, thanks for your answers.
To clear things, i have a total of 3 pcs running the same version of win 7 ultimate (1 is x64, other 2 are x86).
the x86 pc's are working ok and shares everything in the network, but the x64 refuses to see the home group.
The above suggestions didn't work for me and to be honest, although the Homegroup just seemed very easy to set up, i would prefer a more reliable and efficient home network.
Is there any tutorial in setting another network to use at home?