Phone to computer without computer install I want to display my phone screen on my computer so that it can be projected on a screen.

I am not allowed to install any software on the computer or alter any setting of the browser. I have tried various tools such as Airdroid, but they require software installation or Chrome additions (again, something which I can't use).

I don't really want to go down the road of dedicated cables for a particular phone because I will have to change my phone at some time.

I just thought: although I can't install any software, self-executing .jar files do seem to work on our current network.

Edit: I don't want to ROOT my phone if possible: it is too expensive to take the risk.
I'm not sure if how this works but have you tried this?  http://www.guidingtech.com/36734/mirror-android-display-pc-tv/