LAN Internet Connection Disconnecting After Connecting WAP?

I have a very interesting problem, that I cannot figure out at all after trying test after test. The problem in a nutshell:I connect a wireless access point to our network and within 10-15 minutes any wired LAN users internet connection goes down, yet the wireless internet works fine.Here is how our small business network is setup:1. We have a Server 2000 that serves as our companies domain controller and DHCP (I know, I know..dated). We also have another server on our network, which is a Server 2003, which is primarily a backup domain to our Server 2000 and hosts Quickbooks that our employees use and a small intranet website via ISS. We are connected to a router from our ISP with a gateway IP of 192.168.1.2. Our ip address structure is 192.168.1.xxx and subnet is 255.255.255.0.

2. I have configured the AP to be just that, an access point to broadcast wirelessly and made sure that DHCP is turned off on the router. I set it to a static ip of 192.168.1.215 and subnet of 255.255.255.0 and our default gateway of 192.168.1.2. Once I connect it, everything works fine for about 20-30 minutes, then our LAN internet goes down. The Wireless G access point that I am using is a TP-Link Model TL-WA501G.