Windows 7 can't access Internet

[Perryg]

You have installed the Ubuntu fork of VirtualBox which we do not support. So you would need to ask them what the issue could be.

I don't see any reason why it is not working for you but you do keep mentioning that you can not connect to wireless.
1) the guest will never see a wireless connection. It uses a wired connection to the host and however the host connects that is what the guest will use.
2) if NAT does not work then Bridged probably will not either.

[nikitheone]

prolbem solved, my friend did it. instead of eth0, i had to choose wlan0 connection. As simple as that. Thanks Perry for help.