Constantly Have To Switch Ip Addresses / Release / Re-new

This has been a problem for me for about 2 years now.I've seen many other people complain with the same problem, but have never seen a viable solution (it's always what brands, switch channels, winsockfix, firmware, etc.)Wireless connect (Belkin Wireless Pre-N card)Win XP SP2 (updated as far as it can go) The problem: Connection becomes unstable(i.e. slow) for about 2-5 seconds, then utterly fails to connect...can't access web, can't access local address(i.e. 192.168.1.1), can't ping anything. When using DHCP on router, doing a repair (i.e. release/renew clear ARP cache, etc.) fixes. If using static IP, then I must assign a new IP. That is, I have to go from say 192.168.1.110 to 192.168.1.111

The problem is not unique to a single ISP & router. I have two networks I can access. For troubleshooting sake, I made them both unencrypted (although WEP, WPA makes no difference to the problem). I have also tried multiple channels in the theory of interference, and channel strength for both networks are good(using NetStumbler). Both networks are on far channels from each other (i.e. 1 & 11), and there are no other networks detected in the area by WinXP or NetStumbler.Net #1) Ameritech DSL Modem ->DLink Router ->Belkin Pre-N Wireless(access point). Router logs in PPoE (the DSL modem's "router functions are turned off"), Belkin access point has NAT turned off. (don't have the exact model numbers in front of me, but it's irrelavent, as the problem transcends manufacturers.