Setup a wireless connection in vista

Please help me how to setup it
Here's my map (ad hoc):

Laptop2 <= (WLAN:192.168.1.2) <= Laptop1 (WLAN:192.168.1.1) (LAN:192.168.1.10, ICS is enabled) => Router

But it doesn't work. And I can't change the wireless type from b to g

 

Are you sure your Laptop1 can act as a wireless AP? Has it set up to be so?

 

Yes! both have wireless LAN but laptop1 is connected to a router too.

 

Have you enable sharing and discovery in both laptops? Go to network and sharing center and check if you have netwrok discovery, file sharing and public file sharing activated.
Make sure Laptop 2 doesn't have assigned IP but have it to obtain it automatically from laptop 1, like tick the 'Obtain an IP address automatically', in the wireless lan card properties.
Then try to connect and test the connection by ping.
In laptop 2 go to command prompt and type 'ping 192.168.1.1'.
Then in the Lan card properties of laptop 1, click ‘Sharing’ tab and enable both the options to share Internet.
In laptop 2 (not in laptop 1) go to IE8 and Internet Options, click the Connections tab and then click never dial a connection.
Then click LAN Settings and make sure under Automatic configuration to clear the 'Automatically detect settings' and the 'Use automatic configuration script' boxes, then under Proxy server, clear the 'Use a proxy server for your LAN' box.
A small detail: Along with the IP address in laptop 1, have you set the subnet mask as well?
It's good to put it as Subnet mask: 255.255.255.0. Also for the IP address try the 192.168.0.1, it might be better for laptop 1.
How come you can't use the g type? b type wouldn't be very convenient as it is range limited.
What type of wireless cards you have?
There so many things something could be wrong.
Let us know how it went

 

Thanks, so Laptop2 should use DHCP

EDIT: How to change its speed from 11Mbps to 54Mbps?
Laptop1: Dell 1390/Laptop2: Intel 5100

 

To be honest I don't see anything wrong with the IP addresses you have choose, it should have worked if everything is alright. But if you need to assign specific IPs make sure the subnet is the exactly the same in all of them.
What I said before is what I would have done.

 

I don't see anything wrong with the wireless cards. Both of them support ad hoc g type (not all of them support g type in ad hoc configuration) but that doesn't mean they will use it. If they are not incompatible for g type they will choose b type and that is enough to be certified for ad hoc mode. Now you can go to the adapter properties (network and sharing centre > manage wireless networks > adapter properties) and look there in the advanced settings if everything is alright with the ad hoc settings.
By the way in the 'manage wireless networks' you can manage or add an ad hoc network
To get top performance, use Infrastructure mode instead

 

It seems ICS works only with this IP: 192.168.0.1 (as vista said)
My IPs:
Laptop1: 192.168.1.10 (ICS is enabled) for LAN/192.168.0.1 for WLAN
Laptop2: DHCP (No static IP)

Ok, I set it to 54Mbps g mode, but my file transfer speed is terrible (1.10MB/s)

 

I presume it's because the address you were using for laptop 2 before it was used by your router/modem as default gateway or something like that. You can check these settings by typing 'ipconfig -all' in the command prompt.
If you want to use static for the laptop 2 then you can use an address like 192.168.0.3 or 192.168.0.2 in the properties of 'Internet Protocol Version 4 (TCP/IPv4)' in the wireless network connection.
But as I said if you want maximum performance then you should use the 'infrastructure' mode instead of the 'ad hoc' mode. It should be better.
I am happy that you can use ICS now but it will be better if you can get a wireless modem/router. That's what I did and I never regreted it. Also you don't need to have the laptop 1 turned on to use the internet on laptop 2, just keep the modem/router on.

 

Read these:

"The ICS connection only connects to client computers and provides their LAN addresses through DHCP"

"The ICS server adapter's address MUST be 192.168.0.1"

 

Another question: Can I access to the internet through another computers by adjusting default gateway IP instead of enabling ICS?