I have a hard decision to follow
In a small buget, which of the following would you choose:
> a Flat 17"
> 0.24mm
> 1600 x 1200
> and a 19" ( the screen is not flat )
> 0.26mm
> 1600 x 1200
> They both cost the same, what would you choose?

well that depends...how good do they look? if the 19" monitor isn't too curved, i'd probably go for that. higher resolutions should look better...1152x864 is the highest i'd use for 17", but that's just me
1280x1024 and 1600x1200 look good on a 19".
how good is your video card and how high do you want your resolution to be?