Drivers window replacement

Mrs DD's dog has managed to scratch my drivers window so badly I am having trouble seeing out of it! There seems to be a coating on the inside which is now flaking. I have managed to get a new green tinted window from ebay and plan to replace the old one on Sunday.

From what I can see it would seem fairly straightforward to change, but has anyone tried this? Any problems that you came across?
Cheers.

Peice of cake job if you're happy taking door trim off that's the worst part! Remove window seal unbolt from regulator slide it out.

No seal removing is required.
Just remove door trim, unbolt two bolts from regulator,position glass on about 45*deg (left top corner to center) and take it out.

Many Thanks for info - Will give it a go then.