So you just replaced video bios to newer one in 1006_patch?
yes, that is exactly what we did (and still do on many other bioses).
Where can I get this video bioses?
there's no official way. we just hacked them out of other mainboard bioses that already had them included. if you are a large OEM you can always ask SIS to support you with a recent version. but since you're posting here my educated guess is that you're not...
Where can I write my request to add resolution I need?
go over to SIS' website and hit the contact button. read the text written in large red letters, head over to your OEM's site and write them a nice email.
even if your OEM is one of the best (and ASUS surely is) when it comes to support, i doubt that they will put much effort in a piece of hardware that's already 6+ years old.
If you email me include [WIMSBIOS] in the subject.