Windscreen scratches, removal...

[Digger3]

I've got some fine scratches in my screen, is possible to have these polished out ? or is it a replacement job ?

[bacillus]

You can try buying a glass polishing kit if the scratches are fine.
http://www.glasspolishshop.com/glass_repair?product_id=180

[justcallmeal]

There's loads of "polishes" and solutions available to you including: http://www.planetpolish.com/index.php?main_page=index&cPath=3

But all affect the shape of the glass and ultimately how light refracts through it.  The polish may take away the scratch but leave a visual warp to what you see through the screen.
It depends on how fussy you are TBH.

I was lucky that before I  got to buy the polish I got a chip that needed the screen replacing and I'm I did as its new and pure.

I've heard of guys tapping the screen with a hammer and making an insurance claim but it's your call...