Few question about monitors

Hy,  I'm planing to buy new LCD monitor and there are some things that I would like to ask you!

My computer is -> Gigabyte DS3, c2d E4300, 2Gb Ram and Gigabyte 7900GS...

 Qustions are:

1) What resolution should I look for when buying new monitor? I guess that above 1280x1024 is overkill because of 7900GS graphic card! Am I right?

2) I am planing to buy Samsung 206BW (20") or 226BW (22"), both have native resolution at 1680x1050... If I want to play below that resolution, ie. 1440x900 which is almost indentical as 1280x1024, what will games look like? Will the visual quality be poor and pixelated or will it be nice and smooth? At this moment I have 17" CRT and when I play games at resolutions below 1024x768, the visual quality is very ugly and poor, is that the same problem with biger screens like 206BW and 226BW?

 3) In your opinion, which is better for gaming, WideScreen (16:10) or "NormalScreen" (4:3)?

Thank you all in advance, and I'm sorry if my English sucks, I'm from Croatia! 

1) You must use the Native Resolution for best results

2) Visual quality is exelent in LCD monitors even in 800*600 resolution 

3) Wide Screen is good for gaming.

http://www.nvidia.com/page/technology_extreme_hd_home.html 

Thank you all for your reply! I know that 226BW is a Godlike monitor but I'm scared of it's enormous resolutions! I don't think I will be able to play Oblivion or some other "more advanced" games like Oblivion in it's native resolution! Afterall, I have 7900GS which isn't that good above 1280x1024 or 1440x900...

The 226BW is stil an option but I might reconsider buying 931BF instead! It has native resolution 1280x1024, and it has almost indentical specification as 206BW (which is also great)! I know it's not WideScreen, but 19" LCD doesn't have enough vertical space!

What is your opinion on 931BF? 

Thanks in advance! 

Thanks again for your help! You have helped me more than you know! At first I was afraid, I was petrified ...:)... of lower resolutions on big screens but now I know better than that!

Thank you all so much, and sorry once again if you had trouble reading my posts...