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Large number of broadcasts internal network with Bind DNS and WINS

I hope your day is going well.  It seems that I have several requests that are hitting the firewall for broadcast and for DNS entries outbound.  Any thoughts on how to stop this from happening?  Thanks for all your help.

Thanks.
Tim.
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Leon Fester
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Ensure that your local machines are set to use your Internal DNS server. Only your Internet gateway/default gateway should be configured with external DNS entries.

Besides, any broadcast traffic will hit ALL networked interfaces on your LAN. You cannot stop a broadcast from accessing a specific device unless you've wired your hubs/switches correctly to segment your network. But if you've got a smallish network then segmenting is more of a headache than anything else.
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Thanks for the reply.  Would there be any reason for all the broadcasts when everything is setup to use the internal DNS and Wins?  Shouldn't they query those servers first?  Thanks.

Thanks.
Tim.
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Leon Fester
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Thanks for the reply.  Any idea what a good/inexpensive anti-spyware solution would be?  I thought about Spybot.

Thanks.
Tim.