Thank you for the reply.
It sounds like you have several questions here :-)
I will try to answer these the best I can.
In answer to the initial question, yes you can get BT vision as well as BT Infinity. You would need a seperate box, and subscription to each, as well as all of the powerline connections, and plug-in connections to be made.
If you already have BT Infinity, and want to add BT Vision, then you would need to contact BT Vision and check their options, then call at the number at the link below (scroll down to "find a number" at the bottom of the page):
Additionally, if you wanted to send the image from your PC to your TV and view Football that way, then you can run an HDMI cable from the PC (if the PC supports this type of connection), to the TV. There are not any wireless solutions available for connecting the PC to the TV.
If you have further questions, please reply back with the model number off of the back of the TV, and also try to find what connections your PC uses for video (will either be VGA 15 pin, HDMI, or both).