Driver issues with Linux Mint 12

[FeFiDoh]

I am very new to Linux but am getting increasignly frustrated at how annoying it is to do the most simplest of tasks.

Mint keeps going back to 'fallback' mode and I can not get drivers to work properly. When and if they do work I can't even get my second display to show properly.
Such simple tasks I take for granted in Windows are a real pain on this!

How am I meant to install nvidia drivers, it keeps telling me I need root so I do su xxxx then try again and it says I need to restart x? I tried some stuff last night involving su init 3 etc.. and it seemd to do nowt.

I am close to given up altogether I don't really know if it is worth the extra hassle.

*edit*

Ok according to nvidia-settings I am using the current version but it is still going to fallback mode every time I login.

 

[FeFiDoh]

GTX 570 and was using the latest ones, which I ran via the apt-get update command (found via googling).

It seemed to work for a while but as soon as I wanted my second screen to work it all went pear shaped. It either wouldn't work at all or it put the second screen as my main one etc.. I couldn't get it back.

The aditional drivers thing doesn't show anything until I have ran the apt update command and it says it is using a different driver.