Can't reach router admin page

So, this weekend I attempted to install DD-WRT on my router (WNR3500Lv2, latest Kong build)... and I'm not sure how it went: I can no longer reach my router admin page.

• 30-30-30 resets don't appear to have any effect.
• router boots, and lights up properly (although might be taking a while).
• wireless light is on, but nothing I have can see the wireless network.
• Wired coections work, sort of: I can potentially ping other machines on the network(might only work if the destination requested a static ip); tuing on network discovery does result in the computers being visible in Windows.
• Haven't checked inteet coectivity yet, plaing on this afteoon.
• No default gateway is assigned, and the auto-assigned ip is unusual. Attempting to manually set the client ip/gateway hasn't helped.

I've about exhausted what I can figure out so far. Even somehow getting this thing back to the factory firmware would be an improvement.

In case it's needed, ipconfig /all generates the following from one machine:

Windows IP Configuration

   Host Name . . . . . . . . . . . . : GREMLIN
   Primary Dns Suffix  . . . . . . . : 
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Etheet adapter Etheet 2:

   Coection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : D-Link DFE-530TX+ PCI Adapter
   Physical Address. . . . . . . . . : 00-11-95-1D-EB-B7
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::419f:7a91:4d76:b9d5%14(Preferred) 
   Autoconfiguration IPv4 Address. . : 169.254.185.213(Preferred) 
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . : 
   DHCPv6 IAID . . . . . . . . . . . : 301994389
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-66-A5-E1-00-18-F3-76-03-6C
   DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
                                       fec0:0:0:ffff::2%1
                                       fec0:0:0:ffff::3%1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tuel adapter isatap.{EDEF02B6-A95E-43F3-9A8A-0D8B1DD05FB3}:

   Media State . . . . . . . . . . . : Media discoected
   Coection-specific DNS Suffix  . : 
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes