We-Blocker.
You can set it to block only the things you want it to block, and its free.
It has a nasty habit of messing up the install, though.
I have seen the install go south a couple of times, causing the we-blocker software to block all TCP/IP traffic, period.
Then only way to fix it is to call the We-Blocker people and plead with them to give you manual removal instructions, or format the computer.
There is always a trade-off. You get what you pay for, ya know?