Well I have setup the computer and thanks to all the information received here and those that PM me some I think I have quite a secure setup. I did a bit of configuration on the router as suggested and also installed McAfee Internet Security. I have also setup a profile for Mom & Dad and one for each of the kids. You should have seen the fight as to who would be the first to use the computer, Dad however won this one.
Once again everyone thanks for your input on this it really did help me in making sure some of the loopholes were tiered down.
