internet and server 2003 and network DNS issue

We use to run two AD's but when they got out sync it was too much trouble. I keep good backups of the AD and it's faster to bare metal that now if needed. The static IP's got setup quite awhile back when the network was first set up. I can't remember why we did that.

I guess a 2nd DNS server can be on a non-AD machine OK?

Thanks!