thoroughly confused by DNS now and need help...

I'm trying to get my website to where I can view it both internally and externally but I can't seem to get either DNS or IIS configured to allow this. My setup consists of the following:
w2k3 ad domain with a w2k3 webserver sitting in a seperate workgroup.
AD integrated DNS server on DC and a Primary DNS server on webserver.
My domain: www.nusolutions.biz
Bellsouth is ISP
205.152.37.254
205.152.144.235
TZO is dynamic provider
216.75.195.44
216.55.0.21
IP as of right now: 68.222.196.30

My internal network seems to be working fine as I'm able to access the internet on all of my systems.
My webserver has a static IP and is able to access the internet also.
I've installed IIS and created a forward LZ on the webserver. IIS is pointing to the correct location of the website and has the following host headers created:

192.168.1.x - www.nusolutions.biz
192.168.1.x - nusolutions.biz
192.168.1.x - internal.nusolutions.biz
68.222.196.30 - "
68.222.196.30 - "

DNS contains the following records:
NS.tzo.com - 216.75.195.44
ns2.tzo.com - 216.55.0.21
ns3.tzo.com
ns4.
ns5.
NS - www.nusolutions.biz - 192.168.1.x ; 68.222.196.30
NS - internal.nusolutions.biz - ""
A - internal - 68.222.196.30
A - internal - 192.168.1.x
A - www - 192.168.1.x
A - www - 68.222.196.30

I've changed these around so many times I've forgotten which way is up. I know these are configured wrong. Again the probem is that I can only access www.nunsolutions.biz on the webserver and no where else.
I would appreciate ANY assistance on this issue.

TIA