Making progress ! Now for that leap forward; ( I strongly advise install 12.04 for long term stability) in the "try ubuntu" mode: booted to the desk top (12.10 version)-> left side of the screen is the "launcher" -> select " System Setting" ->in the task bar at the top of the screen -> Software Sources -> Additional Drivers (tab in software sources) --> install the recommended driver. Done with this stage. At this time play with ubuntu and check all your devices, that all works.
All is good ?? -> prepare to install ->
At the initial install screen are check boxes for 3rd party sofware, I recommend checking them to accept the proprietary software that ubuntu can not offer. That will install the needed graphics drivers and music/video codecs.
... now is the choice ///let the install wizard do all the install with a minimum amount of intercession on your part ( just the basic questions to establish a location and user account) OR manually set up the install. Manual install can be confusing the first couple of times one goes through it and most easily done with prior set up using GParted( as opposed to the installer's partitioner, that can also be used) to set up the partitions. That takes an awareness on your part as to how you intend to use your system. I will say this in advisement: a separate partition for /home can have its advantages, partition for "/" (which is "root") and partitions for data ...maybe separate for Windows (sharing) or dedicated for ubuntu partitions would be good things.
By far the simplest install is to choose to install ubuntu as the only operating system and "use the entire disk" The draw back to this is that you have 1TB size disk and the basic install will not make maximum use of it ...the installed operating system is but about 5 gigs. The good thing is that you may want to go ahead and do the simple install, get the hang of the new system and at a later time (re-)install ubuntu as you have found how you use the system and then partition accordingly.
The choice is yours, how now may I help?