Conventionally, when IPs are assigned by an ISP, they are kept on the external interface, and DNAT rules are set up to internal network numbers on the other interfaces.
What are your routing rules? Have you set up a very precise mask on each of the interfaces, so that there is no overlap amongst them??
yup i know that it will be easier to put them in the DMZ and thats what we going to do...today im free of work so tomorrow is the day i will be configurating it... will let you know if that solves all the problems...tnx for helping anyway