Need help with router/internet problems.

Alright so my old router started to disconnect and I couldn't use it. The thing is, my desktop, which is hooked up to the router, can access the internet. I have two laptops, a 360 router thing (to use live), and my iTouch can NOT access the internet with the router. It can find the network (Simon's Wifi), but I can't get online with it.

(the current router, the one I can't get online)
http://www.cisco.com/cisco/web/solu...rom_anywhere/linksys_wrv200_glance/index.html

After trying multiple things such as turning off my router, modem, and restarting my computer modem and router, nothing works.

After trying all that crap, I bought a new router. My desktop (the router's hooked to my desktop), iTouch, 360 adapter thing, and one of my laptop's can access the internet with the new router. But, whenever the other laptop tries to connect to the wifi, it crashes my router. My new linksys router can't get online if the second laptop tries connecting. I took off the 360 adapter, turned off the wifi for iTouch, and made sure the laptop (the one that can get online) wasn't connected to wifi and I tried connecting with the other laptop, but that didn't work either.

http://www-vn.linksys.com/servlet/S...nksys/Common/VisitorWrapper&lid=4854805809B06

Can anyone help me with this problem? It's really frustrating because I don't know what the problem is. I don't think it's the modem's problem, I think it's either the router or the laptop, but I don't know. Can someone please help me out with this?

 

Make sure all is supported with each other.

Make sure you are using the CORRECT Encryptation type.
Must issues may come in some people at choosing AES or TKIP.
Make sure that you set your router's Maximun number of DHCP users to the ones you are willing to use.

If you need further help, add me in msn