Problems with msn messenger and also wireless

[etones]

first of all my wireless, my wireless network isnt connecting as my router isnt transmitting signals as the wireless icon isnt appearing on my router, im not sure wat is wrong.

my msn messenger isnt working when i connect to the internet throught a wired network the error code is - 81000306 i have opened my firewall ports to allow msn to work but it is stil not working can anyone advise me on what to do, thank you