No, you don't have to have an official xbox360 wireless adapter to connect to xbox live.
you can connect to xbox live with any adapter. i know this because i used to use a linksys adapter but now i just have a 3 foot Ethernet cable now.
No, but the only other way you can connect to the internet is through a wired connection to your modem.
you can most likely do this but not with the usb lead you connect wirelessly
Through USB connector user can connect laptop to ps3 Thats not wireless. i suggest setting up your media server on your laptop and searching for media servers on the PS3. Hope it works :)
Yes, you connect to the DSi store wirelessly.
Yes, you can connect two HD displays wirelessly from approximately 75 feet. With a wireless HDMI long range transmitter, you can connect wireless displays up to 160 feet apart.
Your router WILL need to be wireless to connect wirelessly to your Xbox, but you can use an ethernet cable if your router is not wireless, straight from the router to the XBOX
Yes, you can but your TV must have wireless functions.
You need a wireless router capable of working with your wireless card.
you just connect wirelessly to your home wireless modem (if you have one, of course)
There are tons of reasons. Most common are secured wireless is enabled, MAC table is enabled, your wireless adapter is not compatible with your wireless router, wireless router does not work properly and so on.
There are no projectors that can connect to a computer wirelessly as there is currently no wireless video specification.
You need to have a wireless connection established in your HDTV before connection will work.
If you want to use internet wirelessly, yes you need a wireless router and a wireless adapter for your PC (usually laptops have it).