hI i am new UBUNTU user. I use both windows 7 and UBUNTU. I have big problen to connect internet in UBUNTU .In windows7 i can use mobile wireless and home wireless smoothly.But in UBUNTU i can use only mobile wireless.But i want use home wireless. below i give my if config

samir@ubuntu:~$ ifconfig
eth0 Link encap:Ethernet HWaddr b8:70:f4:87:3a:a5
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 TX bytes:0 (0.0
Interrupt:16

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:344 errors:0 dropped:0 overruns:0 frame:0
TX packets:344 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:26080 (26.0 KB) TX bytes:26080 (26.0 KB)

wlan0 Link encap:Ethernet HWaddr 68:a3:c4:d5:9a:7e
inet addr:192.168.43.33 Bcast:192.168.43.255 Mask:255.255.255.0
inet6 addr: fe80::6aa3:c4ff:fed5:9a7e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10375 errors:0 dropped:0 overruns:0 frame:0
TX packets:9389 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8506411 (8.5 MB) TX bytes:3291428 (3.2 MB)

samir@ubuntu:~$

What is the output of this:

samir@ubuntu:~$ ping -c 4 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=50 time=171 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=50 time=194 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=50 time=217 ms
64 bytes from 8.8.8.8: icmp_req=4 ttl=50 time=138 ms

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 138.145/180.439/217.483/29.267 ms
samir@ubuntu:~$

It appears that you are already connected to your network. What is the output of:
I should point out that you need to do this while you are not connected to ethernet or any other network except your home wireless network.

i mentioned my previous post i can connect with mobile wireless and posted while using mobile wireless. I want to use home wireless.(WiFi) Now i make unconnect mobile wireless and try to get home WiFi connect and post again.
samir@ubuntu:~$ ping -c 4 8.8.8.8
connect: Network is unreachable
samir@ubuntu:~$ ping -c google.com
ping: bad number of packets to transmit.
samir@ubuntu:~$ ^C
samir@ubuntu:~$

In that case, I assume wlan0 is your mobile wireless card. What is the output of: