Cannot enter setup for ASUS router

[JuzerNejm]

Hi.
I'm having trouble entering options for my router ASUS WL-520g.
What happened is, I wanted to set the router to client mode so I can connect it to the primary router by wifi, and then the devices which don't have wifi onto it.
Since the original firmware didn't let me put it in client mode, I used the DD-WRT firmware.
And it worked. I played around the options for a couple hours, but didn't manage to make the wireless connection to the primary router THOMSON tg782i .
After numerous restartings of the ASUS router, I suddenly couldn't enter the setup for ASUS by entering the ip 192.168.2.1 I addressed it to.
I checked the ip's with Advanced ip scanner software if the ip changed in some weird way, but it didn't.
It did list my router, but it appears as offline althouth pwr, air and lan lights are lit.
I also tried reseting the router, but pressing the reset button for 30 seconds didn't hard reset it at all.
When I wire the ASUS router to my pc and I connect my primary router to the ASUS by wire I have no trouble connecting to the internet, so I suspect the router isn't dead.
Any ideas how I might reslove this?

I took the router to work today to try it but it's the same.
This is what I get when I type ipconfig /all in the cmd.exe:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : NVIDIA nForce 10/100 Mbps Ethernet
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 193.2.77.125(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 193.2.77.1
DNS Servers . . . . . . . . . . . : 192.168.81.24
192.168.73.143
NetBIOS over Tcpip. . . . . . . . : Enabled

Thanks of your help.

 

[indyitguy]

That's the ipconfig /all from your computer connected to the ASUS router in question? You should be typing 193.2.77.1 instead of 192.168.2.1 to get into the router.

 

[bill001g]

The default address dd-wrt used is in the 192.168.1.1 network. If you changed it and you have been messing with the reset switch you likely dropped it back to default.

You may have wiped it back to recovery mode hard to say you must be very careful when you use the reset key.

With DD-WRT you need to very carefully follow instructions for your particular router there tend to be tiny differences.
http://www.dd-wrt.com/wiki/index.php/Asus_WL-520GU

....you do not want to be hooking stuff like this to your company network especially if you do not know how it is configured you could causes massive outages if something like DHCP were enabled.