laptop monitor unknown. how change resolution?

[AuP%*qb!#]

I have an acer aspire one netbook and in display properties it says the monitor is unknown. The trouble is that the screen is widescreen (16:9) but it has it as (4:3)so the screen is sort of stretched.
Is the a terminal command as another way round this or how can i get the screen recognised?

[nitro_n2o]

What is your graphics card? You need to configure X correctly to work with your graphics card first

[AuP%*qb!#]

What is your graphics card? You need to configure X correctly to work with your graphics card first

I have an intel(R) GMA 500 Graphics Media Accelerator 500

[AuP%*qb!#]

Man,lots of views,
only one helper

[AuP%*qb!#]

http://www.pcadvisor.co.uk/forums/in...2392&forumid=1

Seems like pc advisor forum users have beat you on helping sort my prob out.
I guess there is a lot less forum users on here than pc advisor then, am i correct?
Pc advisor has 306540 users. I guess there is a lot less here, am i right?