Please tell me some good hacking forums ......anyone can help me?!?!
What software can brake into windows shares??? --- i don't whatn to crack a computer ....just i need to know how to defend me for this kind of software!!!....see ya

You don't need a tool to break in via Windows shares, except a port scanner to scan port 139 .

So your solution would be a firewall, or closing port 139 (wich will disable networking).

Most ISP's block ports 135-139 these days, and I believe ports 1025-1029 have similar use ?