Another Subnet

You will be creating two separate networks. The best solution would be to change the internal range to a 172 class B address with the 16 zeros reserved for hosts.

Of course this will be a lot of work initially, because you need to address static IP's, but it will open up your network and allow room for expansion. You are not going to want to deal with a third class C for your clients when the time comes. Correct the issue now while there is still hope.

I agree with answer 1. You should re-subnet your network and think about expansion. Get a subnet calculator and plug in IP addresses and it will tell you how many networks and hosts you can have. It's a tool every network administrator should have.